CNC mill 3D printed and laser cut

thingiverse

I've designed this CNC mill so most of its hard-to-get parts can be easily 3D printed. Its modular design allows you to quickly change the size of the machine by swapping either the sides or front and back plates. It's precise enough to accurately cut and drill circuit boards, and compact enough to fit snugly in your car trunk. Full instructions are available at http://www.instructables.com/id/3D-printed-CNC-mill/. I used a UP 3D printer with ABS plastic, noting that most printers tend to print holes about 1-2% undersize. Therefore, the holes for bearings, bolts, and nuts have been intentionally drawn slightly larger to compensate. It's difficult to predict how these components will fit on different types of printers or materials. The sides and back are made from 2 layers of 3mm acrylic, which can be laser cut if you have access to a cutter. Alternatively, you can print the DXF files at full size and manually cut and drill the material by hand. For instructions, please refer to http://www.instructables.com/id/3D-printed-CNC-mill/. This link offers a comprehensive set of directions. There are 28 steps; if all of them don't fit on your screen, simply click the "view all steps" button directly below the title.