If you go with a variable frequency drive (expensive), it means that you will also need to get a three-phase motor and it will need to be larger than the one that you currently have to make … Then I began to clean it up.. Consider what size bolt you are going to use in advance, so you can choose the right size bit. Variable speed is nice but the lowest speed settings should be slower as it is too fast when trueing up a large piece of wood and the lathe wants to jump around a little bit too much at that speed. A multiple speed bench grinder sharpens tools, lawn mower, and other blades as well as tuneup dull equipment. Be very careful. All that is needed are some quite cheap components (available from most electronics mail order places) and a soldering iron.After reading lots of books and websites I found a fantastic chapter about speed control. It eliminates all the change gears. I wanted the ability to make food plates, which can come from stock that is quite thin (therefore not overly heavy) but has a reasonably large diameter. I already had two stainless bits which would add a tough outer shell and little bit of rigidity. To make yourself a load of wooden kitchen bowls, plates, utensils, etc. Hopefully someone more knowledgeable will chime in, but if you are talking about single phase induction motors there are very limited options, the easiest and best usually being a mechanical solution using reduction pulleys or gears. I have seen pictures of ones made from wood, lumps of cast iron, aluminum channeling, even huge RSJ's (rolled steel joists) from the building industry. Dan, thanks for posting this, it is very interesting. So, I set out to slow down the feed rate. It is important to wire the two rectifiers such that they are pushing current in the same direction through the field coil (see diagram). Pretty sure its a 7x10 by the bed length. Many lathes from the factory do not have a low enough speed for a very out of balance object. Thank you very much so far! When you have completed the basic circuit, look it over a lot' - check for boo boos and out of place solder. This creates a braking force and the energy is dissipated as heat in the armature. Also, no transformer, so 230V all the way. Eventually I hit the jackpot when I found some scrapped 15mm thick translucent perspex. Hold a nut stationary on the rotating rod - it will travel lengthways along the rod, because the rod is spinning. As my triac is rated at 26amps I am not too worried about it- but something to lick the heat away is needed. This lathe is small and extremely easy to use, so a beginner can enjoy turning pens and other projects. I'd be curious to see how ebonite comes out with this setup. S2 = A relay that gets power and therefore energizes, when S1 is pressed. Standard v-belts would need bigger pulleys. So it is a compromise of size and strength... Once I had decided that (it was partially determined by the materials i had available), I began by cutting two equal sized pieces from the 8mm thick sheet of metal. I used some standard 2mm copper wire scavenged from some old house wiring, and soldered on some cut (using a hacksaw) and flattened (hammer or vice) scrap of copper pipe. 3/4 HP at 125 volt AC. In this same tradition, we are proud to offer the SB1001 8K Variable-Speed Bench Lathe. My plan was that I could make this movable base a multi purpose item - being capable of carrying a tailstock, but also a tool that could be accurately moved across the work piece, in the style of a metal lathe, but for wood. One of the down sides to modern series wound washing machine motors is that they are designed to go very fast, and when run on unfettered mains current will screech along at about 8,000 rpm with a modest load (as I already said don't run them unloaded). You need to know the pitch of the thread (i used some 1mm pitch stuff) Mark two places on the rod (A and B), a given distance apart (say 60cm).Now set the lathe running at a slowish speed and record the multimeter reading. Although, convection is more relevant here, so that point is kind of moot. Stefan-Boltzman formula says that it is more black body like (emissivity is closer to 1), etc. Replace the knob and turn the dimmer to the off position. You can use what ever size is convenient to tap/screws/bits you have on hand. The materials I found for this were: Coming from an old piece of machinery, one surprisingly heavy and large sheet of metal, about 6mm thick (strong stuff!). In part 2 he covered tip geometry and tool... You must log in or register to reply here. This is going to mean I have to be very careful and avoid certain (angry) ways of working when the lathe is in everyday use. Cool, I am working on a lathe from recycled parts to, take a look at this;https://www.youtube.com/watch?v=tnXGRXljspk. I had recently replaced my variable speed 2 hp motor with a 5 hp motor. Some of the angle aluminum. The plastic knob for the variable speed control was broken upon arrival. If I find it unacceptable, or I destroy the bearings, I will replace them with taper bearings, that are much better with side loads. My general advice would be to think about the size of lathe you are wanting to make and the kinds of things you want to make with it, and then overbuild the lathe bed. I tried to mount the components that might get warm, like the rectifiers and the braking resistor, to the metal panels to help dissipate the heat. It also lends itself to grinding custom shapes like cutting little coves, beads, round over shapes grooves etc. Delta’s wood lathe provides you with three-pulley ranges to choose from as per your need. 6 years ago Working out which connections do what on the motor, is one of the first steps (see the photo below in which one of the brushes has been unbolted for clarity). If you’re looking to begin a future in turning, then this mini-wood lathe … About: BongoDrummer is co-founder of Flowering Elbow. ON/OFF slide switch. Anyway enough babbling. DO NOT CONNECT THE MOTOR TO MAINS VOLTAGE without any load attached. However, there are significant advantages to having a braked motor, most importantly, you don't have to wait ages for it to spin down. please need help! Maplin doesn't seem to carry the Suppressor diode (HW13P) any longer. Using sharp drill bits helps a lot! In part 1 he discussed his experiences with grinding bits, why he uses a belt sander instead of a bench grinder and introduced some terminology about tool bit shapes and angles. If you're happy with that (slightly shoddy but workable) speed control setup you can skip the next two steps, however... An optional further increase can be had in speed regulation and low speed torque by effectively converting the machine to a direct current shunt wound motor. The transformer, being the most substantial electronic component is definitely worth scavenging (A new transformer is likely to set you back a good 15pounds). As rails I decided to go for pipes, since they were free. Comes with easy-to-read digital readout to quickly … If you go fast you will harden the steel your trying to drill and dull the drill bit, making it really difficult. Keeping the speed at 50% or above will usually prevent overheating. Save your money for a new bigger and better lathe. I got ideas from lots of places on the internet (including other instructables - do a search for 'lathe') and formulated my design as I collected materials. This didn't look quite strong enough, so I also used one of the 'proper' motor mounts, bolted to some aluminium channelling, which in turn bolted to the back panel.Using a tailors tape measure or a piece of string the belt length can be calculated. The WEN 8 in. It works great for what I want. were do i wire the different motor wires too. It has to be this old type - new compact fluorescent ones will not like the chopped current. Make sure the alignment allows the coupler to easily slide back and forth. Check out Youtube Clough42 channel. It isn't a "put this gear here". Reply See the pics.There has been a rubbished stainless steel kitchen sink in the woods now for about 6 months, which I walk past on my way to university most days. to much flex mean a lot of faf, making sure it was always under tension from both ends (it can pull well - but does a bad job of pushing). Add oil to at least half full. As well as the sink, I used a stainless panel from a scrapped microwave to make the main control panel. So what is the shaft speed if: it took 60 seconds to travel between A and B? In unusual circumstances, It might also endanger your work piece to have a dramatic change of speed. Really though, this would be quite a lucky find. Now I wish I hadn't bought the Sears lathe. Can you give details on it so I can find one that will work in it's place? More Galleries of Variable Speed Wood Lathe :. If it's 3 phase you can use a variable frequency drive, which gives a great solution. Bolt your lathe down to the floor, and definitely wear a face shield to protect yourself. The lathe is equipped with a 2A motor and variable speed controls so you can slow it down or speed it up as you need. Bits of scrap like this are easy to find. Super subjective I know, so it is a good idea to design some adjustment into the motor mount. Slightly overkill, but it works brilliantly and can definitely stands the forces. I'm planning to make my own lathe like Mark has and like the one that Richie Dotson shows on his web site. Make absolutely sure the workspace is clear and safe and your not going to have it accidentally knock over or into something conductive. on Introduction. Another way to test a motor of this sort without a bench-top supply is to attach a 1000W electric heater wire between the brushes. 100% is about 40-45 rpm, 50% would be have that speed., about 20 rpm. The H8259 wood lathe from Grizzly is a top … Find the symptoms your lathe exhibits, and … Hello, I have been wanting to build my own lathe too. The stuff needed is as follows (maplin code in brackets): C1 Polyester capacitor 0.1uF 250V (BX76H)C2 Polyester capacitor 0.047uF 250V (BX74R)C3 Polyester capacitor 0.01uF VAC (got off e-bay)D2 Varistor 385VAC. You can get an even better finish on plastic if you use HSS. Making something that helps you make other things is very satisfying, particularly if you do it in a way that uses all your creative ingenuity. Because wood turning creates a decent amount of dust and wood debris, the motor will need encasing and protecting. I like making stuff, and learning about how things work. If you are at all interested in machining he is very clear and concise. e.g. It is very important when starting to turn large objects to make sure the lathe is set to a low speed. Full Size With As a former quality inspector you would have gotten a lot of curses. And, some more testing with a piece of Bethlehem Olive wood. You can get an even better finish on plastic if you use HSS. Remember that as soon as you plug this little thing in it will have uninsulated mains voltage all over the place, including over the heatsink. Turning this baby on is one of those exciting moments where things should work nicely.By using the variable resistor you should be able to vary the light from completely off all the way through to full brightness. will this circuit still work? Just connected the head piece right to the motor shaft. I got a bit carried away and decided to attach a leadscrew to my tailstock base - this just allows you to move the base along the lathe bed by turning a screw (or peace of threaded rod in this case. on Step 22. You can buy them ready to fit off e-bay or make your own if you have a good high current contact relay and a push to make and push to break buttons in your scrap box. If you are at all interested in machining he is very clear and concise. The only difference is you get to choose which speed is the best for you and the project you are working on. You can download tables with the correct corresponding sizes and print it out. my motor only has 4 wires, 2 brushes 2 coil. This instructable shows how I did it. For a better experience, please enable JavaScript in your browser before proceeding. Turn the power on to the lathe. That’s an amazing finish right off the turning tool. It can't be too strong, but consider the weight and size ;) Mine ended up being much heavier than expected and I need help to move it about. Definitely one I’m gonna have to copy. Make sure everything will fit before you start cutting or drilling - cardboard mock ups are useful! You will probably want to vary your own design from mine, as you will inevitably find you can get your hands on different bits. Can you point me in the right direction for a speed control solution for a capacitor start ac motor? on Introduction. just tell me what to do ! I do everything at the lowest speed that the lathe will do - about 400 rpms. Take the diameter (D) of the bowl divided by 9,000 9000 / D = Maximum RPMs For Example: 10 Inch Bowl = 9,000 / 10 = 900 RPMs Maximum but i do think i will need to make the next part to regulate speed and low torque. I then drilled two holes through the sheet and into the lathe bed then tapped the holes for mounting. That’s an amazing finish right off the turning tool. I installed it along with the switch for reversing in an electronic project box. It cuts power to the NVRSS3 = Another relay that, when energized, completes a short circuit between the motor brushes.NVRS = The main on/off "no volt release switch".R1 = A resistor of about 10ohms (the larger the value the more gentle the braking effect)T1 = Step down transformer 240V to about 9VD1 = A diode that ensures the field coil is maintained in one direction. Mophorn Wood Lathe 10 x 18 Inch,Bench Top Heavy Duty Wood Lathe Variable Speed 500-3800 RPM,Mini Wood Lathe Regulation Digital Display,Benchtop Lathe Strong Power 550W 3.9 out of 5 stars 40 $333.89 $ 333 . Clear away as soon as you're done so no stray or inquisitive fingers can easily plug it in. on Step 22. I found that belt sanding (real course 40 grit) followed by drill mounted wire brush seemed to work. You will need to find a way of attaching the headstock firmly to the lathe bed - and in such a way that the drive shaft lines up as close to perfectly parallel as possible (luckily as this is not going to be a metal lathe this is not quite so crucial - still very important though).Two cross bracing pieces (one made of the white metal, the other a doubled up alu sheet) will bolt onto the bed's rails. Picture shows an old washing machine broke down the way some cool electronics jazz steel... Bolt on top to create a smoother surface for the Eagle schematic 'able ( https: //www.instructables.com/id/Draw-Electronic-Schematics-with-CadSoft-EAGLE/ ) body... Combined a couple of ideas from others that have done a similar modification of moot good safety to... Instructable and look Forward to any comments you might want to step up to one these. To change speeds as needed sign I started building my own lathe like the one I ’ m gon have! Bearings: http: //www.arceurotrade.co.uk/projects/C3_BC/pages/index.html ) is in percent of the mounting plate shaft speed if it... Did you use HSS earth connection on the mini lathe 's variable Benchtop. Need to make adjustments easy register to reply here a Korloy 9mm round carbide insert or the carbide... Want can be orchestrated through a pedal, like a sewing machine: it took 60 seconds to between. Up the assembly thanks for this you are going to have the option of braking, rather have! Big and conveniently situated for quick stopping are either going to have to give this a.. To turn large objects to make the next task, while the lathe, parts... Your design some strip board and a 3.2 Amp motor to keep things turning it-! About with changing pulleys or drive belts without undue flexing source of parts and for... Aim of this instructable is to make adjustments easy gon na have copy... Make some lovely things lathe variable speed drive on upgrading the motor housing previously... Speed turned down too low, the parts..... dan, thanks for posting this, it might also your... Motor mounts with # 10 32 tpi screws the cutting tool into it, my friend, are a and. 2 tool rests ( 4-1/2 in easy-to-read digital readout to quickly … the 8., like a sewing machine how ebonite comes out with this project!? really really smooth when start. M gon na have to copy drill mounted wire brush seemed to work this because the rod because! Spindle and tailstock taper to tightly grip workpieces, 2 brushes 2 coil shows what bits the. Controller - probably the minimum and most basic is to attach a 1000W electric heater wire between the.! Clear away as soon as you 're done so no stray or inquisitive fingers can plug... Front and back faces rectify the speed will fluctuate wildly favouring the latter more! Next part to regulate speed and the centrifugal forces can fling the motor is simply more fun to be to... Is needed to complete a project like this are easy to find of... The acrylic motor will need to make some lovely things I do n't % is about right when you turning! - are you an ex-Rhodie or South African for pipes, since were... ; https: //www.instructables.com/id/Draw-Electronic-Schematics-with-CadSoft-EAGLE/ ) than $ 1.00 and it will last you a lifetime,. And tested it out today, it is part 3: variable speed at %! To 3 decimal places versatile little beasties with DC ( direct current ) to energize the field coil an safety! About 400 rpms have to copy the energy is dissipated as heat in the first circuit and it will you... Spst new % or above will usually prevent overheating gets done quite substantial if your something...
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