Scott Tse and I have been slowly building a RepRap Mendel, which is a DIY open-source 3D printer. It extrudes melted plastic to ‘print’ objects. We started nearly a year ago, and progress has been very slow. We’ve certainly learned a lot about surface mount soldering with a hotplate, and how to order millions of tiny electronic parts online.
The photo above is what it SHOULD look like when done. So far we’ve built all the electronics, but have been having issues with the extruder controller board. Once we get that figured out, we can start the physical build.