They call their machine the DiyouPCB. DiyouPCB is an open source PCB etching project consisting ... which they used to do preliminary testing and laser tuning. The X and Y axes run on brass ...

Etch resist and toner transfer do the job and a reprap milling machine is pretty neat, but lasers are so much cooler. While it may not be perfect (yet), printing PCBs with a laser shows a lot of ...