This is a how-to as to build a 3d printer yourself. The diy kits on the internet with the plastic parts and threaded rods do not charme me al lot because I like rigidity. So I started with making a rigid frame of 18mm MDF. This is going to be a CNC machine that is multi-purpose, could also be used as a mill, engraver or lasercutter if desired.

Most of the parts and materials can be bought on the internet. The electronics from China are really cheap. The linear slides are not though. The software is open source so can't be a problem.

In order to get the needed precission, some of the parts are casted with PU resin. The molds are machined with my CNC mill, so the holes are precise in place.