That triggers an anecdote: I made my first printed circuit board by coating a bare copper-clad board with beeswax and scratching out the pattern with an awl. Th

That triggers an anecdote: I made my first printed circuit board by coating a bare copper-clad board with beeswax and scratching out the pattern with an awl. That worked well enough for one or two boards, including a little EQ that I made to correct the sound of my seriously deficient stereo speakers, and a guitar fuzz box for a friend.