> Now if I could figure out a way to melt copper and then apply it to
> bare PCB board material, that would be really cool too! If it were
> possible, it would be much more efficient as there would be no need
> for etching, developing, printing, transfer, chemicals, etc. or any
> waste of the copper itself. Just "Draw" the molten copper onto the
> PCB in the form of traces and your ready to drill!
>
I remember that a few years ago Seiko Epson Corporation announced a way to do
this type of thing using inkjet technology. It uses a conductive ink and an
insulative ink. It is capable of multi-layer boards.
http://tinyurl.com/k8k2oChristopher Hart
KC8UFV