Showing posts with label Lathe. Show all posts
Showing posts with label Lathe. Show all posts

Sunday, March 6, 2011

Wood Lathe Tool Rests - Use Them Safely




The tool rest on a wood lathe is a deceptively simple looking piece of work. It looks generally like a T held in a movable base called a banjo for reasons best left to non-banjo players. People who say it looks like a banjo have probably never stood in a jam session at three in the morning with fellow bluegrass enthusiasts. However, I digress. Even such a simple accessory has its safety issues and they are easy to work with.





First of all it is necessary to remember that a tool rest is just that, a place to rest a tool. Almost all of the time on the wood lathe it is the shaft of the tool that rests on the edge. This should remind the turner that hands may assist in the guiding of the tool by moving along the face of the rest as it faces the turner, but never on the top, especially if part of the hand is found under the shaft as the tool is held. It is quite easy and always unexpected to encounter a situation called a catch where the wood grabs the tool tip, raises the shaft in the air and slams it into the tool rest edge. This is usually startling and annoying. But, if the hand or any part of it is caught between the shaft and the narrow edge it can also be extremely painful and can cut. The solution of safety is simple. Keep the hands behind the tool rest.





Wood lathes move wood around very quickly and with a fair amount of force, particularly with some modern lathes having motors up to fine horsepower. In addition, that wood is often off center or quite uneven when first mounted for turning. It is imperative that the wood clear the tool rest or it will strike it at great force and may cause the wood to fly off the lathe. Simply turn the wood by hand before starting up the motor and adjust the rest to clear the work. Also, for good tool control and to reduce the leverage of a catch on the tool, it is good practice to keep the rest close to the work. Whenever moving and adjusting the rest the lathe should be shut off and the work rotated by hand to make sure it clears the tool rest.





Most tool rests are secured in the banjo with a bolt that is managed with wrench or a handle. Make sure the tool rest is secure in the banjo before starting the lathe. Just get in the habit of checking that the bolt is tight. If the rest is loose the pressure of the tool against it as you turn will move the rest into the wood resulting in a catch.





Finally, avoid working at the end of the tool rest especially if working on large pieces of wood. The torque resulting from a big catch can snap light tool rests and may result in injury. Use a rest that matches the work. They are readily available from after market sellers and can also be made up by a good welder.





As always in wood-turning, common sense dictates safety with tool rests and all other accessories. The idea is to be careful and have fun while encouraging safety in the craft.


Saturday, March 5, 2011

What Is a Wood Lathe?




A wood lathe is a type of machinery, generally used in turning industrial products for ornamental purposes. In a nutshell, a lathe uses a rotation device that spins parallel to the surface, and with the help of different tools, it can create unique cuts and designs with a solid block of material. Lathe tools reformat an object by cutting, drilling, knurling and sanding, providing symmetrically designed products turned on a lathe.





From all types of lathe machinery, including the lathes used for pottery or jewelry, the wood lathe is the oldest. And without doubt, the different tools used for wood turning are the most part of the entire lathe machinery. This variety of tools used with wood lathes consists of different chisels, used for creating the unique designs and patterns resulted from wood turning. And the amazing thing about a wood lathe is not the unique designs or patterns, but the fact that it can produce a completely finished work entirely on its own. While most tools employed in industrial production require tools that are separate from the machine to finish the design, a lathe has its chisel tools attached directly to the lathe, allowing it to do all the work at once.





To better understand the concept, these wood turning tools of a wood lathe take a solid wood object and turn it into a symmetrical ornament, such as a table or chair leg. With the help of a wood setup, a woodworker will be able to duplicate identical wood parts, so all table or chair legs are the same.





Wood turning has a lot of different shapes, styles and designs to offer, possible through a wide range of accessories for wood lathes. And with nowadays' amazing advances in technology and machinery, the accessories are more proficient than ever. The most commonly used tools in wood turning are the gouge, the spear chisel, the skew chisel, the parting chisel and the round-nose chisel.





In order to get the best results and products, a woodworker has to know all the different tools used in a wood lathe, and understand their unique characteristics, features and capabilities. Understanding how each tool works is essential for the proper usage of a wood chisel, and the best results come with a lot of practice. For more detailed information, search online for the different types of wood lathe tools, and read about each tool in particular. And remember, practice makes perfect.


Wood Lathe Buyer's Guide




There are a lot of different wood lathes for sale these days, and it can be hard to decide which one is right for you. There are a lot of different factors to consider, such as size, brand, model, price point and what specific features you are looking for. A good wood lathe will last you many years and you shouldn't buy one without doing some research first, or you could regret your decision.





If you're buying your first wood lathe, you have to seriously look at how much money you're willing to invest. Ask yourself whether wood turning is a new hobby, or something you have been doing for many years. You don't want to drop a couple thousand dollars on a wood lathe, only to decide in a few weeks that you're bored of wood turning and want to take up a new hobby.





If you've never used a wood lathe before you might want to consider a hobby lathe. These are little more than a mount for an electric drill that will allow you to turn a small piece of wood. The performance is not nearly as good as a regular lathe, but it will let you get into wood turning at a fraction of the cost.





One of the biggest considerations when buying a lathe is the size. Are you looking to make pens or table legs? If you want to turn a few pens or other small projects, a pen lathe will allow you to do everything you want and are generally much cheaper than full sized lathes. Slightly bigger you have your mini lathes, that can turn small bowls and other small to mid sized pieces. A full sized lathe will be able to handle whatever you throw at it, but in general are more expensive than smaller tools.





When it comes to brands you'll notice there's a wide range of prices. The cheaper lathes are usually made in China and are not as well built as their American counterparts. This is not to say they are bad lathes, but the quality control and materials will not be quite the same standard. With that said Chinese made lathes have been improving in quality and growing in popularity in recent years, and if you are looking for a reasonably priced lathe there are many very good models to choose from.





If you're looking for an American lathe, you can expect a very high quality tool that will last a long time, but you will pay a premium.





It's a good idea to try out a range of lathes before you make any purchase, ask people you know if you can try out their lathe to get a feel for it, and ask what their experiences have been, there's really no substitute for first hand experience. You should also check out the reviews online to get a feel for whether people are satisfied with particular models of wood lathe.





There are a lot of wood lathes for sale online these days, and the prices are quite good, often with free shipping. If your local selection isn't that good, or if you're looking to save a few bucks, I definitely recommend looking at online retailers for your wood lathe. They can often beat brick and mortar stores thanks to lower overhead.


Friday, March 4, 2011

An Introduction to the Wood Lathe Chuck




A wood lathe chuck can be an excellent addition to any wood lathe. A chuck allows one to turn smaller pieces of wood with a high degree of flexibility while avoiding the inconvenience supporting the wood with the tailstock.





Many people use wood lathe chucks for smaller projects. They are an absolutely necessary tool for anyone who would like to turn wooden bowls or similar items.





You can choose your wood lathe chuck from two different options. Three-jaw chucks center the wood in the lathe automatically and are well suited for symmetrical projects. That is because these chucks basically immobilize the wood, which means all rounding will be toward the true center of the wood. These are the lathe chucks with which most woodworkers first experiment. They produce great results, even though they are somewhat limited in what they can do.





A four-jaw wood lathe chuck offers more flexibility. These chucks allow the lathe user to move the wood during the turning process. This allows the operator to create rounded pieces that are not necessarily symmetrical or centered. These chucks are ideal for those who are handling very specialized aspects of custom projects and for artists who do not want to find themselves limited any more than necessary.





Suppliers provide three-jaw and four-jaw chucks in multiple sizes. A jewelry maker may find himself using a tiny, one-inch chuck. Meanwhile, a turner of a large wooden bowl may work with a chuck with a full two-foot diameter! There is a chuck for every project and every preference.





Your choice of a chuck size must be governed by two factors: the size of the lathe upon which the chuck will be used and the size of the wood pieces you plan to turn. Before you purchase a wood lathe chuck, double check your lathe's capacity and determine the chuck's intended use. That will help you to secure the right tool for your specific needs.





Lathe chucks can produce some amazing effects. Any lathe-using woodworker will be able to find a number of uses for these tools.





At the same time, it is important to note that these devices are best managed by experienced lathe users. That is particularly true of the manually manipulate four-jaw chuck. Additionally, numerous accidents occur when chucks become stuck. Anyone using a wood lathe chuck should make safety a top priority and should know the proper procedure for handling a stuck chuck.





If you are serious about woodworking and love your lathe, you can make it even more valuable, flexible and enjoyable by adding a three-jaw or four-jaw chuck to the mix. These great tools make it possible to use your lathe to complete a number of gorgeous products.


Woodworking With the Lathe




Woodworkers sometimes view the lathe as an exotic or unneeded tool. This view is short sighted in the extreme and removes a lot of enjoyment from a woodworker's time in the shop. Perhaps the view is caused by the nature of the wood turning lathe itself.





Most woodworking tools, and power tools in particular, are used to remove bits and pieces from boards prior to reassembling those bits into a finished article. For instance, table saws saw boards with cross cuts and rip cuts into smaller boards while drill presses remove wood from circular areas to allow bolts or screws entrance or to make a decorative area. Jigs are often used to make cuts more precise and to keep hands away from the cutting areas. The rapidly moving saw blades and cutting surfaces discourage a close approach to the work.





Hand tools meanwhile are regarded by many woodworkers as needing an extraordinary amount of time and talent to learn to use them well. In many cases this is true. However, if we look at the work of craftsmen prior to the industrial age we realize that a lot of beautiful work was done by a lot of people, not all of them classically trained nor apprenticed workmen, but rather homeowners making something for the family, much as do the hobby woodworkers of today.





The wood lathe enters somewhere in between power and hand tools. In the days gone by the lathe was often turned by hand or foot power. As time progressed, water wheels may have been used in the factories while treadle lathes were used in smaller businesses and homes. Perhaps with the emphasis on home gym equipment today, the treadle lathe could make a comeback. For most woodworkers though, a modern lathe with an electric motor is the way to go. Hence it is viewed as a power tool because it uses an electric motor to make it work.





The difference between the lathe and most power tools comes in the handling of wood and cutting tools. A table saw, the mainstay of many woodworking shops, has a rapidly rotating blade fixed in position and a piece of wood is carefully manipulated through the cut. Wood lathes are made to hold the wood and to rotate it, the direct opposite function. Meanwhile various cutting tools are held in the hands of the woodturner, one by one, and manipulated to remove pieces of the wood in various ways and patterns so as to complete the piece of work. In some sense, the nature of a wood lathe being a power tool or a hand tool becomes quickly blurred.





This moves a woodworker to new realms of thought and enjoyment. While most saws are used for straight cuts or perhaps a curve, the lathe opens up circles and rounds to the woodworking vocabulary. Table legs for instance, move from being straight lines with at most a taper, to being rounded with curves, grooves, beads and tapers. New design possibilities are opened up and new ways of looking at things develop. Plus, for most hobbyists who work with wood, there is the delight in having and learning a new tool. Woodworkers can expand into a whole new realm of pleasure and satisfaction.


Thursday, March 3, 2011

Why The Ancient Woodworking Lathe Is An Essential Modern Tool




The woodworking lathe dates as far back as the ancient Egyptians, and possibly further back than that even. The earliest recorded use of a lathe is in 1300BC, when the Egyptians used a simple two-person lathe, whereby one person would turn the wood with a piece of rope and the other would use a sharp tool to shape it. Since then, the woodworking lathe has gradually developed into the (usually) mechanized tool we know today but it has the same basic principle and function. The wood turns while the cutting implement remains stationary, which allows for intricate designs to be carved.





Woodworking lathes enable the creation of products that do not simply have straight lines and that require greater cutting versatility - musical instruments, bowls, lamp bases, pool cues, curved table legs are all made using a woodworking lathe. The obvious difference between a woodworking lathe and any other woodworking tool is that the wood itself moves, spinning at a controlled speed in order that the woodworker can press a sharp cutting tool, which remains stationary, to shape it - the reverse of other woodworking tool processes.





A woodworking lathe can either be a compact, table-top design or a larger, freestanding machine that can be securely fixed to the floor. The wood to be worked on is attached to a rotating spindle and secured at the other end and is either motorized or is operated by a foot pedal. The tool rest on the bed of the lathe is designed to run parallel to the wood, enabling a steady base on which to rest the required tool, whether that be a chisel or some other cutting implement. Sandpaper is often used on the turning wood to smooth the metal cuts and create a flawless shape.





Whether you are a beginner or an experienced woodworker, using a woodworking lathe is a completely different kettle of fish and requires patience and learning to master the skill. It is a tool that allows you to be incredibly creative, which is why many artisans use a woodworking lathe to help them produce beautiful, hand-crafted bowls, vases and sculptures in every design, shape and size imaginable. It is a tool that allows versatility in your work. Just as woodwork products come in different measurements, so do woodworking lathes - big or small, powerful or less so and of course with that comes a huge difference in costs. Unless you are a professional you do not need to buy top-end lathes (which can be thousands of dollars) but there are a few things you should look out for.





A woodworking lathe that overly vibrates can be incredibly frustrating, given how precise shaping needs to be. You also want to ensure that the tool rest has adequate rigidity to keep your tool firmly in place. Decide how much power you need - this will depend on the size and weight of the wood that you will putting in the lathe.





A woodworking lathe is an invaluable tool for those woodworkers looking to create something really special but they can be expensive so do your research online and find the right lathe for you.


How to Make a Pattern Copier For Your Woodworking Lathe




Lathe pattern copiers are expensive and are not available for many wood lathes. Pattern copiers are used to make duplicate turned spindles from an original. Here's how to make your own.





You will need a piece of 1/2 aluminum tubing as long as your lathe bed or a bit longer to make your lathe pattern copier. You will also need some 1/8" thick aluminum sheeting or you can buy some aluminum cookie sheets. Purchase a box of 10-40 bolts 1 1/2" long and a wing nut and washer for every bolt. Buy a second box of 10-40 bolts 1" long with nylon-lined lock nuts for every bolt. You will need (4) 3" angle irons with screws, as well. The rest of the parts for your lathe pattern copier can be made out of any scrap wood you may have laying around the shop.





The design of this lathe pattern copier incorporates multiple feeler "fingers" suspended behind the lathe along the aluminum pipe. These fingers are adjusted to match the exact depth of the cuts in your original turned spindle. When you place a new spindle blank on the lathe, all of the lathe pattern copier fingers you adjusted will be laying on top of the blank. As you cut into the blank, prepare yourself to stop cutting as soon as the fingers relating to that cut drop down and through the cut.





Make two, vertical support posts about 6" higher than the top of the largest spindle blank you can turn on that lathe. Note the outside diameter of the aluminum pipe and drill a hole of that size near the top of each support post. Mount the posts using the angle irons on the lathe table immediately behind the lathe. Insert the pipe through both holes to make sure it fits.This will help position the aluminum fingers of your lathe pattern copier so that they can reach the spindle you are turning.





Make a bunch of wood blocks 3/4" x 1ï؟½" x 6" long. Drill a pipe sized hole in one end of each of them through the ï؟½" thickness. With the blocks lying flat, cut through from the end into the hole with a 1/8" table saw blade. With the blocks standing on edge, drill completely through each block between the hole and the end of the block. Use a drill diameter slightly larger that the shaft diameter of the 10-40 bolts. Insert one 1 ï؟½" 10-40 bolt through the hole you just drilled and place a wing nut and washer on the end. The idea is that the wooden blocks will slip onto the pipe and the bolts and wing nuts will hold them in place by closing up the 1/8" cut you made on the table saw.





Drill another bolt hole of the same diameter about 1/2" from the other end of the block, centered with the block laying flat on the drill press table. Cut another 1/8" slot, 1" deep and centered through the 1ï؟½" dimension, at right angle to the bolt hole. Remove one end of the pipe from the vertical support posts. You can now mount the blocks along the pipe before replacing the pipe in the vertical support post of your lathe pattern copier.





Cut aluminum fingers out of the flat stock using a 1/4" blade on the band saw. The fingers should measure 6" long and 3/4" wide. Both ends should be completely rounded (3/8" radius) on an edge, belt or disc sander. Drill a 10-40 bolt hole in one end of each finger centered 1/2" from the end. Sand the fingers smooth, removing saw marks and burrs.





Mount the aluminum fingers onto the ends of the wooden blocks, securing them in place with the 1" 10-40 bolts and lock nuts. The aluminum fingers must be free to move up and down.





Now place your original spindle on the lathe. Set the fingers to just drop through, barely touching the depth of each cut. Place the first blank on the lathe with the fingers you just adjusted resting on top of the spinning blank. Start cutting and stop as each finger falls through.





Bob Gillespie





Woodworker





ï؟½2010 Robert M. Gillespie, Jr.


Tuesday, March 1, 2011

Mini CNC Lathe Overview




A mini CNC lathe is generally converted from a regular lathe when a hobbyist wants to experience a machine that can do twice the work they can do manually. Usually these are small machines that have a lot of power but that can sit on a desktop or workbench in the home.





The CNC mini lathe is a good choice for people who want to experiment with what these machines will do, inventors or for people who specialize in making models. The CNC mini lathes are good for metalworking in general and for making small parts that need to be made with precision. Generally speaking the individual starts with a mini-lathe that they buy and then convert it to do CNC.





Most mini-lathes are a smaller version of those used in commercial shops but they can be a different design than those that are made strictly for working with wood. The mini-lathe is able to shape plastics, woods and other materials. A nice feature of these is that manufacturers are continuously developing new features so it has become easier to convert them to CNC over the years.





Mini lathes usually come in three sizes: 7x10, 7x12 and 7x14. Each one is measured by the length that length of the swing as it goes over the bed of the lathe. Today you can also find 9x models. The conversion of a general mini-lathe to include CNC has many benefits.





Many plans that you can find on the Internet will allow both manual and CNC abilities in the conversion because there are times when an individual is working with the machine that they may elect to do some processes by hand. At other times they may want to use CNC capabilities to produce repetitive pieces or ones that require a lot of time manually.





Converting to CNC also allows you to be able to produce both 2D and 3D contours which are unavailable when you are only working a lathe by hand. All you have to do is program the computer to create the part you need. You can use wood plastic or metal to make a mold and using the CNC portion you can produce a mold that you can use as many times as you want because it creates a perfect mold. You can do multiple holes drilling by creating the diameter of the whole and then programming it into the computer; from that point the CNC lathe does the work.





When converting to CNC it will generally take one or two weekends to finish the conversion; however plans will vary depending on what you want your CNC mini-lathe to do. You can usually buy plans that include pictures and step-by-step directions for around $50.





To convert to CNC you will need to understand either CAD or CAM software because currently these are the types of software that is used in the CNC mini-lathe machines. Usually you can control the lathe right from your PC because the software is created to run in that way. Generally it seems that you can make this conversion for under $2000.


Wood Lathe Chucks - Do Not Forget the Jaws




These days when woodturners speak of wood lathe chucks, they mean the new style 4 jaw chuck. Most of these lathe chucks come with a set of middle size jaws and many others are for sale. Extra sets of jaws can make a versatile tool even better.





The middle size jaws are used to hold objects that range from about 1 1/4" diameter to 2" diameter. This of course varies with different manufacturers but is a pretty good guess. Check with your supplier before you buy. For a long time, this size of jaws suits many if most turners. It will permit the turning of bowls to fifteen or sixteen inches as well as a variety of smaller items.





Smaller jaws are available for all the major wood lathe chucks on the market. These allow for pieces from 3/8" up to 1" in diameter. While this may seem extremely small to non turners or to those new to the craft, there are a great many items such as scoops, candle sticks, or ornaments where these jaws are used. This allows for a very secure hold on small pieces that are turned at high speeds and otherwise may be knocked from the lathe. It also circumvents the need to develop some far more complex way to hold small items for turning.





Large jaws are obviously used for large pieces. It should be considered when buying large jaws that can open to three or more inches that some pieces may call not only for large jaws but also for a larger, stronger chuck. Manufacturers usually have more robust versions of the chuck for large, out of balance pieces of wood. With that said, a large set of jaws can be used with discretion to hold many items for turning.





Jumbo jaws are sold for many of the 4 jaw wood lathe chucks on the market. These are not used for holding large, unbalanced chunks of wood but rather for turning the bottoms of bowls by holding the finished bowl at the the top. This solves a lot of problems for may turners in completing a bowl to satisfaction and a good bowl is the mainstay of many woodturners.





All in all, more jaws of various sizes can make you versatile 4 jaw wood lathe chuck even more versatile. Of course this makes the craft itself more versatile and can stimulate your creativity as you look for more uses for both chuck and jaws.


Monday, February 28, 2011

A Lathe Addict Can Never Have Too Many Woodworking Lathe Tools




There are a huge variety of woodworking lathe tools available to create the exact design and finish you require. Depending on the project, you will have different tool requirements. You may need a texturing tool to add detail to a bowl, an Oland tool for faceplate work, a hook tool for grain end hollowing, or an articulated hollowing tool for hollowing hard-to-reach places. The list of tools is as long as the list of lathe cutting methods and an avid lathe woodworker can never have too many.





There are a number of common woodworking lathe tools, most of which are types of chisel. Those detailed here are basic woodworking lathe tools but the cut you want will determine the woodworking lathe cutting tool





you need. A Gouge is a round nose hollow chisel used for roughing up cuts, although you can perform scraping, shearing and cutting with it so it is very versatile. This is the tool that you should begin to learn with, as it is the only one able to initially round the wood. A Skew Chisel is used for smoothing and cutting shoulders and is a flat double ground chisel with its end being ground at an angle. A Spear Chisel is flat ground to a point, a Round Nose Chisel is flat with a rounded point and is used pretty much exclusively to hollow, and a Parting Chisel, used for cutting-off and determining the depth of a cut, is a double ground chisel. Calipers are also essential for measuring and shaping wood as there is no other way to measure the diameter with absolute precision.





Woodworking lathe tools need to be kept sharp, both to maintain good workmanship and as a safety measure. A blunt woodworking lathe tool is like a blunt knife - it will not cut well and you could end up cutting yourself as you put unnecessary force on it. Those who have been using a lathe for a long time and are highly experienced might manually sharpen their woodworking lathe tools but unless you are absolutely sure you know what you are doing, it is wise to invest in a grinder. You can either use a common bench grinder or a slow-speed grinder.





The method you choose is down to personal preference but the advantage of the slow-speed grinder is that it doesn't heat up the woodworking lathe tools and allows you more control. A round-edged chisel will need to be rolled on the stone and flat-edged tools will be placed flat up against it. Once you have sharpened your tool, just smooth it with some sandpaper to get rid of any burs.





Woodworking lathe tools can be easily found on the internet, on one of the many sites dedicated to woodworking, or you could even consider making your own, which certain sites can also teach you to do. There are only a few woodworking lathe tools that are absolutely essential but those who are passionate about woodturning will undoubtedly find that as they think up more and more creative projects, they need to find the tools to do the job.


Turncrafter Plus - PSI Wood Lathe Review




For the last few years I have been thinking about buying a wood lathe. I've always been very interested in wood turning, and thought it would make a great hobby, but I'd never really gotten started.





A friend of mine, Chuck, is a very experienced and skilled wood turner, and every so often I get a chance to experiment with his lathe, and I always enjoy the experience. He's always happy to let me use it and willing to teach me anything I want to know, but I feel bad for imposing on him.





I never really got serious and did my research on wood lathes since I always felt that it was too expensive a hobby, and I couldn't really afford it. I knew that Chuck's lathe, a large model from General, cost him several thousand dollars and just figured that was the normal price range. This kept me away from wood turning for several years!





Recently I started looking at Wood Lathe prices, only to discover there's a large market for much smaller less expensive lathes. After looking at several reviews online and finding most of them positive, I decided to invest in A Turncrafter Plus from PSI.





This lathe was marketed as an inexpensive beginner lathe, and that's what really stood out for me. It cost a little over 150$, so I wasn't expecting too much. I was thrilled with the purchase anyway, since I would finally be able to get into wood turning, and if it didn't work out then it wasn't as if I had made a big investment.





When it arrived I was pleasantly surprised. The Turncrafter came nicely packaged and looked great out of the box. It was very small, only about two feet long and half a foot deep, but that was perfect since I don't have a lot of room in my shop. I was impressed with how heavy and solid it seamed, since I was worried that for the money I would get something flimsy or easy to break.





I attached a small piece of wood using the included live center and turned it on. It runs very quietly and smoothly, whether you have it on the slowest or fastest speed. I bought a set of lathe tools with it, and they cut into my spindle as smooth as butter!





I've turned a handful of pens and a candle holder on it so far, and I haven't had a single problem. It holds the spindle very well, and spins without slipping or choking. I couldn't be happier with this lathe. There are some limitations, mostly because of the small side, so maybe at some point I will want to upgrade to a bigger lathe, but for now it's perfect.





If you're looking to get into wood turning I highly recommend the PSI Turncrafter as an inexpensive alternative.


What You Need to Know About CNC Metal Lathe?




Metal lathe is one of the processes taking place in the actual metal process. When metal is cut and treated, metal lathe is one of these cutting processes. CNC Metal lathe device is a general term for a machine utilized to eliminate material for a work piece, though the use of a cutting tool. They are specifically designed for metals.





There are a lot of lathe variations in terms of processing the metals. In the metalworking field, several lathe techniques are being used to ascertain the quality and cut of the metal that is under processed. At the same time, there is a lot of CNC Lathe used for metal lathes. Let us discuss one by one the most commonly used Metal Lathe machines that are being used in treating any types of metals.





First on the list is the centering lathe machine. It is a double head machine which focuses the work at the center of the work piece. He heads are fixed and moved forward creating a drill hole in the middle of the work piece in both ends of it. The result form of the work piece can now be utilized in the center with the aid of another operation. Center lathe can also be referred to as an engine lathe and more metals are subject to this type of lathe. This type of machine is the most widely used machine for metal lathe and it is preferred by most of the general hobbyist or machinist.





Another type of machine for lathe purposes is the capstan lathe machine. The machine is categorized to be a manufacturing machine. It is a specialized machine which incorporates the functions of a typical lathe machine plus the revolutionary tailstock in a capstan style. It is commonly used for woodworking and other wood industries alike.





Another type of machine used for lathe is the turret lathe. It is also considered a manufacturing machine, and is very similar with the capstan machine appearance. Unlike the capstan machine which is stationary, turret machines are more versatile and mobile since it contains the turret slides that glide straight to the bed, instead of being fixed in one place.





There is another type of lathe machine called the combination CNC lathe wherein it introduces milling and drilling operations into the plain work piece of the lathe. These types of machines normally have an x and a y axis using the carriage for x and a top slide for y.





Old and Typical lathe machines are being replaced rapidly by CNC lathes machines. CNC lathe uses state of the art tooling for better precision and accuracy. These CNSC machines are highly specialized, but they are set for a simpler way of setting lathes and operation. The processes are modern and advanced. Most machinists and hobbyist prefer the CNC lathe machines since they are more versatile, efficient, and simple compared with typical lathe machines. At the same time, they are sure that the operation is not taken into sacrifice while making the work simpler than it gets.


Sunday, February 27, 2011

Used Wood Lathe For Sale? Is it a Bargain Or a Bust?




So you have seen an add for a used wood lathe and you are on your way to see it. Will you find a bargain or a bust? What should you look for before parting with your hard earned cash?





Wood lathes are very basic woodworking machines. They have a set of ways on which the rest of the lathe is built. These are usually reinforced angle iron set exactly parallel to one another. Make sure they are:





1. Flat. Use a straight edge to ensure that the surfaces are flat and sight along them with winding sticks to make sure they are coplanar.





2. Clean. A little rust is OK and minor amounts of finish on them is to be expected. These are easily cleaned with a little fine wet and dry sandpaper and is general maintenance. However, a bit of heavy paint can cover a hard to fix ding or a place where rust was able to cause serious corrosion.





Most wood lathes have the tail stock on the right and the headstock on the left. The tail stock holds the tail center for spindle turning and may be used to hold other items such as a Jacob's chuck from time to time. Make sure:





1. It moves easily along the ways and locks down securely when fastened. This will happen with a bolt that connects to a plate below the ways and may be secured with a handle or a wrench. Once fastened down you should not be able to grab it and move it.





2. It does not wobble in the ways. They are parallel and the tail stock needs to be kept parallel within them. A few tail stocks have adjustments to correct them but not all.





3. The Morse taper is clean and in good shape.





4. It lines up with the headstock. Put a center in both and make sure the points are in the same plane vertically and horizontally. If not and there is no adjustments available, walk away. This is no bargain.





The tool rest and banjo between the tail stock and head stock need to move easily along the ways and be sturdy. They are easily maintained and corrected for minor dings and hits.





The headstock is the heart of the lathe. It is also the part that can be fixed most thoroughly. Belts and bearings are usually inexpensive and reasonable to replace. Make sure:





1. The motor works well.


2. It is secure to the ways.


3. If it rotates it has to lock down well.


4. The Morse taper is clean and in good shape.


5. It lines up with the tail stock. If it does not, walk away.





There are a lot of good bargains in used lathes and more come up as wood turners upgrade to larger tools. Looking for a few minor things can allow for the bargains to keep from being busts.


Saturday, February 26, 2011

Turning Balls on a Lathe




Lathe work is so fun and exciting! If you're looking for a new woodworking project, consider turning some balls. It's fun to do and you can thoroughly entertain your children with this project. There are lots of things that you can do with turned balls. You can create decorative accents for vases, mobiles, a marble set for the kids, use them to create stems on handmade wineglasses, cabinet and drawer knobs, a working universe model, or create a handmade wine bottle stopper; the possibilities are really endless! Just use your imagination and think of all the crafty things you can do with wooden balls.





First you need to choose the type of wood that you will use. Basically, the harder the wood, the less indention you will see from the wood turning lathe attachment. The wood is held in place by a circular mechanism, so sometimes you will get a circular indention on one or both ends of the ball. Some lathe attachments don't mark up the balls as much as others, but really it depends on the type of wood that you use.





Start off with a center mounted block of wood. Use a gouge tool to get started and skew chisel to turn your block into a smooth cylinder. Be especially careful with the skew chisel, as it is considered to be very dangerous. If this is your first time using one, go very slowly and wear protective clothing and face protection. Skew chisels can easily dig into the wood and spring from your hand. Review the proper techniques for using a skew chisel before you begin. Practice before you turn on the lathe. The skew chisel should be very sharp and produce a long thin ribbon of wood when you're doing it correctly. You may have to attempt to create your cylinder several times until you really get the hang of the skew chisel.





Use a caliper to measure the diameter of the cylinder, making sure that it is the same all the way around. Then turn the caliper ninety degrees and mark the cylinder for the width of the ball making sure that it is exactly the same as the diameter. Measure for the center of the wood section that is to become your ball. Mark it with a pencil all the way around.





Measure half-way between the outside boundary marks and your center line. Use the pencil to mark this point so that the center of the cylinder is now divided into three sections. Use a gouge tool to cut from these new lines down to the boundaries, sloping out at forty-five degrees. Continue to work your way down so that the cylinder becomes more and more like a ball trapped between two blocks. You may need to remark your center line at this point.





Cut the ball loose and use a ball drive to hold the ball steady. Mount it with the center line vertical. Work your way around smoothing as you go. You can look for shadows to spot areas that aren't perfectly round yet. Take the ball off, rotate it so that the center line is horizontal, and repeat the smoothing process. Use fine grit sandpaper, rotating the ball ninety degrees again and again until the ball is smooth.





This technique is used for making balls. You can use the cylinder technique to create cylinders, dowel rods, or dowels of custom diameter. Remember to be safe!


Maintaining and Operating a Metal Bench Lathe




A metal bench lathe requires careful maintenance for it to last long and work effectively. It must be maintained in the best way possible to prevent damages as well as to ensure the user's safety. The one key thing in ensuring the longevity of a metal bench lathe is to keep it clean and free from all debris or metal chips. This can be done by blowing the machine after use with compressed air, as this will help remove even the dirt that is firmly sticking to the machine. The presence of metal chips in the jaws of a Metal bench lathe can make the machine crash or eat into the material while using it. This cannot only ruin the metal bench lathe together with the raw material but can also knock off the machine from the point of concentration.





All chips should be kept away from the bed because their accumulation can stick into the spindle while working and this can cause bruises in the arms of the user as well as cause a thermal break down stemming from the failure of the coolant to reach the tool's tip. All metal chips should therefore be cleared before embarking on the job. It is also very essential to know how to operate the Metal Bench Lathe so it works perfectly. It all starts with turning on the machine. The machine should be turned off when it is not in use because it usually consumes a lot of power. Once it has been turned on, the spindle should be started at 1000 RPM. The machine should be allowed to run for 10 minutes before starting to use it. This helps distribute to all the key areas in the machine and allow for the warming up of the spindle before cutting begins. One should ensure that tool is sharp because sharpness determines how well or bad the machine will perform.


Three Tips For Using a Wood Turning Lathe




If you learn the right way to use a wood turning lathe, it will soon become one of your favorite tools. Here are three important tips for using a lathe. They're applicable to all projects and you should keep them in mind whether you're turning a big, thick table leg or a delicate candlestick.





Good Projects Start with Good Wood





Before you even think of starting a wood turning lathe project, double-check the quality of the wood you're using. Using the right kind of wood is important, but that only one consideration.





You need to check the wood carefully to be certain it's the right size. Remember, you may lose a portion of the piece's top and bottom. That means you'll want to use pieces that are slightly longer than the project requires. There's nothing more frustrating than turning a great piece and then finding that you just can't use it.





You'll also want to inspect the wood carefully for quality. If you find deep scratches or cracks in your wood, you may end up with a final piece that will fall short of your quality standards. Check your wood for appearance, as well. Some pieces may have slightly discolored areas or grain patterns that just won't look right when you're done.





Using the Right Tool for the Job





A particular project may call for the use of a wood turning lathe, but that doesn't mean that any lathe will do. This fact becomes quite clear when you witness someone "biting off more than he or she can chew" by trying to handle an oversized piece of wood in a smaller lathe.





A pen lathe is great for a number of different jobs, but it won't be up to task for bigger projects. Likewise, smaller lathes may offer more precision and control than larger ones, making them ideal for small projects. Step back and evaluate both your project and your equipment. Are they really a good match? You should be able to answer that question in the affirmative without hesitation.





Your Hands and Eyes are Worth More than a Great Table





Every single project involving a wood turning lathe is serious. That's because you're using powerful equipment that has the potential of hurting you if not used correctly. "Safety first" may seem like a worn-out cliche, but it bears repeating when it comes to lathe work.





Be certain your wood is properly placed and is snugly fitted into the lathe. Use all necessary protective gear. Never touch a moving piece of wood with your hands--it only takes a few moments for the machine to come to stop. Don't remove a piece of wood until you've flipped the power switch to "off."





You may be excited to finish your project in record time, but it doesn't make sense to trade your safety and well-being to save a few minutes. Take the time and care to keep yourself safe.


Tuesday, February 22, 2011

Lathe Equipment For Spindle Turning




The lathe motor drives a spindle to which the timber to be turned is attached by means of a range of equipment/accessories. The spindle, in the headstock of the lathe, is hollow with an internal taper which accepts some driving devices; other devices can be screwed onto the spindle which is threaded on the outside. The size of the taper and thread varies between lathes so it is important that the user knows these sizes when buying the various devices for fixing the timber to the lathe.





The tailstock houses a hollow barrel which also has an internal taper, usually, but not always, the same taper as in the headstock. This barrel accepts the tail centre which supports the timber during spindle turning.





The headstock spindle and the tailstock barrel should be hollow all the way through so that devices fitted into the tapers can be tapped out with a round bar when necessary. If the headstock is not hollow then it is advisable to use a thread protector on the headstock; unscrewing this will eject any device in the taper. Tail centres can be removed by placing a flat piece of metal between the centre and the body of the tailstock and then winding back the barrel with the tailstock handwheel.





There are several types of drive centre for spindle turning. These do not grip the wood so there needs to be support from a tail centre. Two or four prong drive centres are usually supplied with a lathe. These consist of a centre point with two or four driving blades mounted on a tapered shank. The drive blades can be located in the timber by saw cut grooves or the drive centre can be driven into the timber with a wood or plastic hammer. The Stebcentre is a more advanced type of drive centre; the centre point is spring loaded and this is surrounded by a circle of fine points, the wood is driven onto the Stebcentre by turning the tailstock handwheel until the points engage. For turning light pulls there is a stepped drive which locates in the previously drilled blank. Conical drives of various sizes are also available, these usually screw onto the headstock spindle. A drive with an internal square taper, for turning lace bobbins, is also available. There is an increasing range of mandrels and accessories for pen making.





When the timber is driven by one of these devices it has to be supported by a centre in the tailstock. When a dead centre is fitted the timber rotates around the point of the centre causing friction and the generation of heat. To minimise this effect it is necessary to lubricate the point of contact with wax. A much better device is the live or rotating centre whose point is mounted in bearings which allow it to rotate with the timber thus eliminating the need for lubrication. Tail centres come in a variety of sizes some with the point incorporated in a cup centre which reduces the risk of splitting the timber.





The tailstock can also be used for housing a taper mounted chuck, such as a Jacob's chuck, for drilling the timber as it turns. A hollow tailstock also acts as the guide for a long hole boring bit which is necessary when making table or standard lamps.





The tool rest is fitted in a banjo which can be moved along the lathe bed and at right angles to it. The tool rest can move up and down in the banjo and can rotate within it; both banjo and toolrest can be (and must be) locked when in the correct position. All lathes are supplied with one, toolrest - some with two. For best control of the cutting tool the tool rest should be as close as possible to the timber. When very small items are being turned (e.g. the baby in a mother 'n babe lace bobbin - about 20mm long) the standard tool rests are too long, so there is a need for a smaller rest. An engineering friend may be able to make one, or a standard rest can be cut to size or Sorby's system may offer a solution.





The height of the lathe is important in the interests of safety and ease of use. Ideally the centre line between the head and tailstock spindles should be at the level of the turners elbow. Some lathes have a height adjustment others do not, so it may be a matter of making a platform, of suitable height for the lathe - or the turner - to stand on.


Monday, February 21, 2011

Wood Turning Lathe Devices




Wood turning can be a fun filled experience when a right kind of tool is employed. It will be truly rewarding and an addictive experience for the wood workers. You can do wood working process at ease and even modifying any furniture present at home with these devices. The real joy in making or modifying your furniture can give a real sense of happiness. It also saves a lot of money and time for you. It can be a learning experience by which you can master the art of handling the tool.





Lathe machines have become trendy in the recent days. Be careful in selecting the right kind of device for your application. If you pick up a wrong tool, then you might end up in frustration by not getting proper output. You might have wasted huge amount of money on a wrong tool which is absolutely useless. There are tools available in various sizes. Right from pen type lathes to huge machines, they come in huge sizes suited for different types of applications. A 11 inch lathe will have the capacity to turn a wheel that has diameter of 11 inches.





The other factor to be considered in woodworking lathes is the center measurement. This number determines the maximum length of the materials required that can be mounted between the head and tailstock. Their parts might or might not include leg or table stand. This will help you to get proper elevation while working with these devices. Proper height will improve efficiency of the operators.


Getting the Most From Your Mini Metal Lathe




After thinking about your upcoming projects and interests, you have decided that your need a metal lathe. After further consideration, you are convinced that you do not need to invest in a full-sized model. A mini metal lathe looks like a perfect fit.





A mini metal lathe can be a wonderful purchase--but only if you are going to use it the right way and for the right purposes. Here are a few suggestions for getting the most from your mini metal lathe.





When "Mini" Matters





Do not purchase a small lathe simply because you want to save a few dollars. There are distinct differences in the power and capacity of full-sized and mini lathes. They are designed with different tasks in mind.





One of the quickest ways to ruin a lathe--and a project--is to try to put your smaller tool to work on a job that is better suited for a full-sized model.





Put simply, do not try to bite off more than you do and your mini metal lathe can chew. If you do, you will find marked performance deficiencies and you will put undue stress on your machine, shortening its lifespan.





There is an old saying that bears repeating. "Use the right tools for the job." In this case, it means using a mini metal lathe for smaller efforts and a larger lathe for their respective purposes. Do not try to "get by" with less than you really need.





If a mini lathe is not really up to task for your plans, purchase a larger piece of equipment. You will save time and money in the long run and you will get better results.





When "Mini" Doesn't Matter





We have discussed the difference between larger lathes and their smaller counterparts. Now, let us consider some important similarities.





Regardless of the tool's size, some things remain constant. You will be working with a powerful tool that is probably capable of 100 RPM or more. You are dealing with metal, moving parts and electricity. That is an extremely potent combination!





That means it is important for you to approach the use of your mini metal lathe with the same level of care and respect you would exhibit when using a super-sized "mangler." You do not want to cut corners in the safety department.





Wear the right equipment. Follow all manufacturer recommendations. Most importantly, take your mini metal lathe seriously. It may be smaller and less intimidating than the giant "finger eaters" you first used in shop class, but they are not much less dangerous.





If you use it the right way and for the right projects, your smaller-sized lathe may rapidly become one of your favorite tools. On the other hand, incorrect use paves a road to failure and frustration. A lack of respect for the power of the tool can result in serious injury.





You need to remember when "mini" matters and when it does not. That understanding is at the very heart of getting the most out of your mini metal lathe.


Sunday, February 20, 2011

Points To Consider For Wood Turning Lathe Devices - Part 2




The most advanced versions of these tools are expensive. Make sure the device will accept the readily available tools and accessories. Choose the additional accessories so that it will fit the size of the machines. It is important to note down the head stock spindle thread and the tail stock taper material sizes.





If the device comes with a leg or table, make sure it is of correct height and elevation. This helps in smooth functioning of the device. Workers will be in a better position to extract the best out of these lathe tools. An important tip to remember is that the center of the spindle should lie at the height of your elbow. The height should be adjusted to the individual heights. A stand built will solve these problems for the beginners.





It is recommended to get some expert advice before you buy the device. Someone who has been working with these tools for a long period of time will be able to give valuable advice on the kind of selection of tools.





Consider the safety measures that you have to take before start working on these tools. It is even the responsibility of the manufacturer to design the tool in such a way it ensures safety under all circumstances. Do not be hurry in choosing the device.





Make a note of the warranty features and the terms included for that. The expert advice will be of maximum help under this circumstance. Make sure you buy the right kind of tool to execute your task.


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