Archive of the former Yahoo!Groups mailing list: Homebrew PCBs

Got an hour of PCB stuff in today, maybe more later.

The creases on the bottom of the page were from transport misalignent,
have adjusted that and they are away now.


In terms of transfer to pcb i have found two interesting things:

Peeling the paper off just as it leaves the fuser (still hot) results in
very good transfers, possibly better than leaving it to cool.

Using very little silicone (spread as thin as you can, so that the paper
comes through) results also in very good results.
It did work bad with low-temp silicone so i'm surprised. But thinner is
better 'cause cheaper and see-through (alignment).


I have made 2 flawless transfers of 4, and 2 with slight holes. must
experiment more to narrow down the problem.
re-use of paper is definitely possible, just remove all toner with acetone
if any is left.

3.3mil and 5mil line width is converted by the printer to the same width,
and provides a sharp transfer, but i fear underetching would get it.
Spacing of less than 10mil fuses together, but right now i use darkest
toner and using less migh allow lower spacing.

It seems it works after all.

ST