Ever wanted to create your own multilayer printed circuit boards? For most of us it's easier to send them out to a commercial boardhouse but it can be expensive. Open Collector recently included a link to a homebrew through-plating machine that can create 3 in x 3 in, 4 layer boards in about 4 hours for around $10 per board. The creator's website includes plenty of photos but is a little light on description. He offers to provide more construction details including schematics via email, however, if anyone else wants to try making their own multilayer boards.