It's just the bearing, no cap or housing or anything. Two similar sized tray like pieces of stainless steel. my motor only has 4 wires, 2 brushes 2 coil. We also use a very low voltage (and high current) to energize the field coil. A variable speed grinder works in much the same way as a single-speed model does. I ordered the parts..... Dan, that looks really really smooth. I used a 12mm x 30 degree carbide round insert designed for wood turning. 7 years ago Electronic speed control is highly desirable for washing machine, and other series wound, commutator motors. This creates a braking force and the energy is dissipated as heat in the armature. If you really want to do it, though, it is most likely that you will find that it does not really cost very much and it is not nearly as technical and dangerous as established experts would have you believe." The current passing through the resistance wire should be enough to limit the speed of the motor. I do everything at the lowest speed that the lathe will do - about 400 rpms. If you are at all interested in machining he is very clear and concise. The list is endless. on Introduction. 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. It may not display this or other websites correctly. 3) It was relativity pointless complication, which introduced more bits that might go wrong. It is very important when starting to turn large objects to make sure the lathe is set to a low speed. I'd be curious to see how ebonite comes out with this setup. 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. Basically this switch will start from a push button but if there is a power cut for any reason, it will not automatically restart when the power is restored. As my triac is rated at 26amps I am not too worried about it- but something to lick the heat away is needed. 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. His explanation of threading is the best I've ever seen. I could have also ordered some spade connectors to make the 'live', 'neutral', 'the armature' and the 'stator coil' contacts, but I felt like making my own to save a few pennies (see photo). 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 achieve this without some sort of electronic control would mean an elaborate (read even more noisy) and large pulley system, and,c) if connected straight to the mains the speed regulation will be poor when load is applied to the motor. I have viewed your steps and they are very helpful! Fairly straightforward: drill the holes, and bolt up (I tapped a thread in the bed's rails, but a bolt through with a nut would probably have been ok too). What a gift you have Sir and Im awed at your brilliance and good heart for sharing!! S2 = A relay that gets power and therefore energizes, when S1 is pressed. To do this we rectify the speed controller output and supply the motor with DC (direct current). Simply the best, most detailed and well written instructable I've read so far. Definitely one I’m gonna have to copy. 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. Save your money for a new bigger and better lathe. It is only rated (on the case) to 2.1A at 9V DC and I was needing more like 5A, but after testing it seemed the rectifying diodes were the weak link, and the transformer, when not completely sealed in plastic, as it was originally, actually runs nice and cool when delivering a steady 4.2A. This instructable shows how I did it. It eliminates all the change gears. Of course, there have been people that look incredulous when I tell them I am building a wood lathe. 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. I really like your idea of using the carbide insert on the metal lathe. As a former quality inspector you would have gotten a lot of curses. I found that I could bolt the part of the motor housing that previously held the electrical connector directly to the back panel. I like making stuff, and learning about how things work. Variable speed control knob. Some of the angle aluminum. Here I made three mistakes - 1) attempting to make a monster leadscrew-nut from perspex, which obligingly snapped my extra long self-fabricated tap; and 2) using a leadscrew that was only 6mm diameter. But the HF models look like an exact match also. on Step 10. If i want to tap a 6mm thread (because I want to use a 6mm bolt) and if the thread pitch is 1mm, then the drill bit size would be 6mm - 1mm = 5mm drill bit. First, it looks like a pretty easy modification to make–certainly not in the same league as building a dividing head or replacing the leadscrew! There will likely be 3 stator coil connections,2 brush contacts,2 tachometer contacts,and an earth connection on the motor frame. 0-2500 RPM. For this application a poly-v belt is best. 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. Maplin doesn't seem to carry the Suppressor diode (HW13P) any longer. (see for more info on taper bearings: http://www.arceurotrade.co.uk/projects/C3_BC/pages/index.html). Basically you are looking for something long, straight, and strong enough to support a spinning log without undue flexing. My feeling was that this was outweighed by the fine axle and ready made bearing housings, and more importantly I had it all there and then, and it was free! Inline parallel shaft gearMolon, Toggle Switches,Switches,Electrical,SPST New. 5 years ago 2. Using the change gears in a mini lathe, the finest feed you can get is 256 threads per inch. If you are at all interested in machining he is very clear and concise. Make absolutely sure the workspace is clear and safe and your not going to have it accidentally knock over or into something conductive. Even with a modest load a direct connection to 240V mains is a bad idea, as the speeds are likely to strain the bearings, brushes and frame - all of which are not designed for unlimited power without a hefty mechanical load. Just connected the head piece right to the motor shaft. 12 amp at 250 volt AC. 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 I have made the first circuit and tested it out today, it worked! The electronics is the only thing which differs from your design. To do this we will need the optional components mentioned earlier - a transformer (100VA should suffice - but see what you can find) and bridge rectifiers (these get quite hot, high current ones are a good idea). Once the steel is cleaned up the aluminium can bolt on top to create a smoother surface for the sliding tail stock. If you want to make something like this yourself, and you plan, as I did, to spend very little and to recycle other peoples landfill material, you certainly will have to think 'outside the box' as you put materials and things to new and unintended uses. Again see the pics and their descriptions for more. That's a hard one. Hold a nut stationary on the rotating rod - it will travel lengthways along the rod, because the rod is spinning. Check out his youtube channel: www.youtube.com/floweringelbow, https://www.instructables.com/id/Draw-Electronic-Schematics-with-CadSoft-EAGLE/, http://www.arceurotrade.co.uk/projects/C3_BC/pages/index.html, https://www.instructables.com/id/Sharpen-Your-Drill-Bits/, How to Make Charcuterie Boards Using Clear Acrylic Templates. So, I set out to slow down the feed rate. This on its own looked to be a bit flimsy, so I also rescued a long peace of angle iron that was rusting away at my parents farmhouse. You could buy a standard heatsink from Maplin or similar or make your own. Definitely one I’m gonna have to copy. You can download tables with the correct corresponding sizes and print it out. Grinding your own cutters .... Mal as Danny said you can get a much sharper edge with HSS. Or, a good rule of thumb is to take the bolt diameter and take away the thread pitch to give the size of drill bit. JavaScript is disabled. It also presents a safety hazard as attention is focused on the next task, while the lathe remains spinning and dangerous. 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. If you do get a washing machine motor try and grab the whole machine - then in the comfort of your own home you can take your time to work out how the wiring went. I then drilled two holes through the sheet and into the lathe bed then tapped the holes for mounting. on Introduction. This last weekend I turned a large oak log that was out of balance. 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. “With a variable speed metal lathe like the LeBlond RKL, you get the RPM to match up to your cutting feed rate and the surface finish you want on a piece,” Cook says. The spindle is rather simple: everything needs to be screwed into place. I really like your idea of using the carbide insert on the metal lathe. As headstock consists of parts from an axle from a big trailer. 7 years ago Simply attach the multimeter to the tacho output, set to read voltage (20V scale). That looks fantastic! Favouring the latter and more environmentally-friendly option, this instructable assumes you will scavenge one. 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