Since [Alessio] has been etching his own PCBs, he’s hit upon the most tedious part of the process, and the reason homebrew SMD boards are so awesome: drilling your own boards is a pain. While [Alessio ...

I'm googling but having little luck with this... so, basically, what I need is a matrix to transform an arbitrary plane, in format ( i,j,k,distance ) to be co-planar with, say, the z plane ( 0,0,1,0 ) ...