Homebrew PCBs

The trick to toner transfer is to get all the toner hot enough to become
"sticky" but not hot enough to actually melt.  There's a small range of
temperatures for each specific toner; the closer you can get to (and
hold) this temperature, the better.

I did a few experiments with transparencies...

	http://www.delorie.com/pcb/transparencies/

The copper needs to be clean enough to let the toner stick *and* needs
to be "roughed up" with an appropriate grit sandpaper so the toner can
get a mechanical bond with the copper.