--- In
Homebrew_PCBs@yahoogroups.com, "lemar" <doyle51241@...> wrote:
>
> Any further activity on this subject?
> I'm modifying an HP Laserjet 4+ and am trying to work out the timing issues. Just wondering what others are doing.
>
> LeMar
>
Hi LeMar,
I've tried direct printing and never had much luck getting good adherence i.e. the traces need lots of touch up.
The simpler solution is to find a Xerox ( or Tek ) thermal wax printer. You can feed single sheets of thin PCB stock directly into an unmodified printer. The wax stands up to Adam's CuCL etching bath and you don't have to fool around with laminators, just print and etch!
The printers been around for about ten years so they are cheap on the surplus market.
The original post on this idea was from an engineering professor in Oregon I believe. An archive search might reveal more details.
I've also experimented with EDM which gives great results with fine traces but is VERY SLOW. Make that Sllllooooooooowwwww!!!
Curt