Homebrew PCBs

>  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/k8k2o

Christopher Hart
KC8UFV