![](https://fabbaloo.com/wp-content/uploads/2020/05/5460178-9780941-thumbnail_img_5eb0dd5c26e4e.jpg)
The 3D printing process was actually 2D: a marker pen was guided by the RepRap over the virgin board to outline the electronic traces. Two passes were required to produce a sufficient amount of resist.
There are several approaches to electronic printing, but it’s great to see another successful one.
Via UltiMachine