Hi Patrick,
Seems like we've got a couple threads going...
--- In
Homebrew_PCBs@yahoogroups.com, Patrick Cambre
<braincambre500@...> wrote:
> I have a HP Photosmart 7450 printer...as it does a
> remarkable job on making b/w prints.
Inkjet printers won't work for the toner transfer process. TT needs
the toner to be melted. Ink won't do that.
> My further questions are...It seems as though you are
> saying that you use inkject transparancies with an
> iron to press on the image to the PCB. Am I correct on
> that. Is so, would an office supply or Best Buy or any
> of these type chain stores, carry inkject
> transpancies?
I got lucky with the inkjet transparencies. I bought HP and they
worked. They're about a dollar a sheet at office supply stores, so
it could get expensive trying a lot of brands (no one sells single
sheets). I bought mine in bulk in an auction on eBay. All I knew
was that they were HP and I took a chance. It paid off... Don't
see that seller listing anymore, but I bought a couple hundred and
that should last awhile.
> Looking forward to your great words of wisdom and
> encouragement. Your pictures definately look great!
Thanks. As I mentioned, the narrowest traces I use are 16mil.
Usually larger to avoid problems with over etching and pitting. I
size my traces so pitting doesn't affect current capacity. I'll
push spaces down pretty low at times, but I try to minimize the
tight pitch areas to make transferring less critical. If I get a
bridge, I just use an Xacto type knife to clear it before etching.
Can use the same technique to clear shorts caused by under etching.
Regards,
Dennis