Homebrew PCBs

OK, thanks for that info Harvey!

Charlie

On Tue, 30 Jul 2013 22:09:35 -0400 Harvey White <madyn@...>
writes:
  
On Tue, 30 Jul 2013 22:12:59 +0000, you wrote:

>Can you 'splain the green foil thing to "seal" the
>top of the toner?

Pulsar (who makes a blue transfer paper) recommends a light foil to
seal the top of the toner. It's similar to the stuff that's sold in
sheets. Put it over a black text on a paper copy, and run it through
a laser printer or laminator, and the "dust" on the foil (or the foil
on the carrier) fuses to the toner. Makes colored or
foil/gold/silver/copper letters.

The use of the foil in making PC boards is to coat the top of the
toner with something supposedly harder than just toner, and to fill in
the gaps in the toner with the foil. Pulsar makes two varieties, one
green for the toner/etchant, the second is a thicker white that is
used to do silk screening. The only difference is that the pattern is
transferred to a drilled and etched board, and the foil is much
thicker.

Put it on, and then you use tape to pull off the excess. (needs to be
done), then you have a silk screen. I normally don't do it simply
because it takes more expensive paper. 

Harvey

>
>Charlie
>
>On Tue, 30 Jul 2013 13:15:38 -0400 Harvey White <madyn@...>
>writes:
> 
>On Tue, 30 Jul 2013 09:30:35 -0700, you wrote:
>You may also want to consider green foil or the like to "seal" the top
>of the toner, which may help a lot in making the board a bit more
>rugged as well as eliminating some of the holes.
>
>Harvey
>
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