Download the source files from our SVN, mask the copper layer with toner-transfer, or UV exposure method, and etch the board with some acid. Once complete you’ll have your very own home-built Soldering Iron Driver v1.5. This is what Alex has done, and so far he seems happy with it.
Ok, here is a pic of it. Yes, i am crazy to have soldered it double sided, and it looks strange, but could not wait.
Via the forum.