Drawing machine

pinshape

My wife caught a glimpse of the new AxiDraw and fell in love with it. Unfortunately, they won't start shipping until June, so I decided to build one myself over the Easter holidays. Although I'm not done yet, progress is being made and everything seems to be coming together nicely, so I think I can share my project now. The AxiDraw is marketed as Open Source, so I hope I'm not infringing on anyone's copyright here (if I am, please let me know). Please note that mine isn't up and running yet, so I don't have any firsthand experience with it - we just saw an online video and were hooked. My first prototype is based on laser-cut parts, but my plan is to create a fully 3D printed version. The STEP source and STL files are available for download. Be aware that some parts may need to be rotated to print without supports or you can use the Onshape public document to achieve the same results: https://cad.onshape.com/documents/236f46681d1cbe31f6d52db0/w/5948c0b4f86507971afed68c. My project is starting to take shape... https://www.youtube.com/watch?v=_V3bHmOuxTI&feature=em-upload_owner with the new ends that hold the motors down instead of up. And here's me drawing: https://www.youtube.com/watch?v=xPq4ciNnNnw Update New and improved pen holder, pen carriage, and belt tensioner. I've added a taller part for those who use 48mm tall stepper motors too. Bill of materials: 2 nema 17 steppers 4 8mm smooth rods (two 400mm-long and two 320mm-long) 8 LM8UU 2 GT2 pulleys 10 F623ZZ bearings 1 micro servo SG90 (plus a 250mm cable extender) 1 Arduino UNO 1 CNCshield 2 Pololu stepsticks 1 GT2 belt (1.4 meters long) 2 M10 threaded rods (400mm-long each) 8 M10 nuts 8 30mm M3 screws with nuts 8 6mm M3 screws 4 16mm M3 screws with nuts 4 M3 washers 2 4mm OD, 100mm-long carbon fiber tubes 2 15mm M3 screws 1 12V 2A power supply 1 USB cable 1 felt tip pen (or many for more fun) Note that stepper motors should be 40mm or shorter unless you choose the taller parts I later created for users who want to use 48mm tall steppers, like those used in many 3D printers.