The Lazy And Poor Person's Homebuilt CNC Machine

thingiverse

I'm extremely broke, I don't even have hose clamps to replace the zap straps and tape, haha! I really tried to think outside the box, doing the least amount of Newtonian work possible. Still had to use anti-backlash though. I used Nema14 motors because I'm so poor, I recommend modifying them for better performance. Doubling up on motors lets me skip bearings altogether since they're already built-in. Every last penny counts! I used PVC hose for couplers because those things are two dollars each if you wait three weeks. The wood came from the garbage pile down the street and most of the electronics were already on hand, limited to hardware store stuff mostly. If this is new information, dig in! I'm building a motor mount today unless I head out for some scrapping instead. Minimal printing too - I didn't want to stare at my printer nonstop. EDIT: I used 5/16 rods initially thinking that would be more efficient, but wrong - the formula is torque equals coefficient times diameter times force on object required. So I'm switching to 3/16 rods and turning this into a 3D Chocolate Printer instead. It's just too wimpy with those small motors. And it turns out 5/16th rod is 13.5% less efficient than 3/16th rod. EDIT2: Motors are too small, I'm looking for thinner more efficient rods now and had to disassemble the anti-backlash for now - https://youtu.be/HbKCOynk7Gs Here's the first slice. Ron EDIT3: Uploaded nut adapter file so you can use 3/16" threaded rod instead of 5/16" without re-doing everything, 13% efficiency increase. In Canada, metric is hard to come by.