CNC engraver

thingiverse

I printed and assembled this with all hardware and components but unfortunately I didn't take any photo's but it did exist. I ended up giving it away prior to wiring up the motors... The main frame is designed just under 1 kilo at 100% infill so if your printer doesn't have a filament sensor than start with a new roll for that part. Any nema 17 size motor will work, the rods, bearings, couplings and lead screws are all 8mm standard components used with 3d printer fabrication. The dremel is just a standard mini dremel. This nice thing about this is all that's required for fabrication is a 3d printer and a hacksaw, and a little super glue to secure the slip fit components. If you ever wanted your own CNC engraver this is a low priced way to start. Update, the 8mm linear rods were too hard to cut with a hacksaw so I used the dremel with a small cutoff wheel. I've added the Ebay links below where I purchased the hardware (the dremel I already owned), this thing costs under $100... I've added the Solidworks (2018) files. I used standard fasteners (#10 and 1/4), the frame is recessed for standard hex nuts. Axis travel X: 4.25 inches Y: 4.50 inches Z: 1.1 inches Bearings, lead screws and lead nuts: https://www.ebay.com/itm/T8-Pitch-2mm-Lead-2-8mm-Rod-Stainless-Lead-Screw-Linear-Rail-Bar-Shaft-T8-Nut-/254018528392?var=&hash=item3b24af2488 Stepper motors (X and Y): https://www.ebay.com/itm/Nema-17-42mm-Stepper-Motor-37oz-in-12V-0-4A-3D-Printer-Reprap-Arduino-DIY-CNC/131904482878?hash=item1eb61eae3e:g:Si8AAOSwHoFXqtAx Stepper motor (Z axis): https://www.ebay.com/itm/USA-Nema-17-Stepper-Motor-Stainless-Steel-8mm-300mm-Lead-Screw-T8-Nut-3D-Printer-/223822637887?hash=item341cde6b3f Linear bearings (12 PCS): https://www.ebay.com/itm/12PCS-Hot-LM8UU-0-8cm-8mm-Linear-Motion-Ball-Bearing-Bushing-Bush-Top-Quality-/233187392148?hash=item364b0d3a94 8mm guide shafts: https://www.ebay.com/itm/2PCS-OD-8mm-x-600mm-Cylinder-Rail-Linear-Optical-Axis-Shaft-Rod-Bearing-Steel-US-/401889967914?hash=item5d92823f2a 2 PCS: 203mm 2 PCS: 215mm 2 PCS: 120mm