CNC engraver

thingiverse

I fabricated and assembled this project with all necessary hardware and components, but unfortunately I didn't take any photos. However, it did exist. I ended up giving it away before connecting the motors. The main frame is designed to weigh just under one kilogram at 100% infill density. If your printer doesn't have a filament sensor, start with a new roll for that part. Any Nema 17-sized motor will work. The rods, bearings, couplings, and lead screws are all standard 8mm components used in 3D printer fabrication. The Dremel is just a standard mini Dremel. One nice thing about this project is that only a 3D printer and a hacksaw are required for fabrication, along with some 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: I used the Dremel with a small cutoff wheel instead of a hacksaw to cut the 8mm linear rods because they were too hard to cut. I've added links below where I purchased the hardware (I already owned the Dremel), and this project costs under $100. I've attached the SolidWorks (2018) files. I used standard fasteners (#10 and 1/4), and 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