OK Folks - ST has a very valid point with the parchment paper. I have done a couple more transfers and the ground plane does NOT get good coverage - I do think it's due to the paper. As a control I did a toner transfer using Pulsar paper with printer settings the same, laminator temperature the same, and even used PCB off the same sheet, with same prep.
There is a BIG difference in the ground planes. No need to etch the parchment paper transfer - I knew before it wasn't good, just thought it might have been my toner getting low.
The Pulsar paper was not even new - I'd already done 2 or 3 TTs using that same piece of paper.
Oh well. Great idea anyway. "IF" you don't use a ground plane with only traces - and the traces do not exceed .020", the Parchment paper just might turn out a good etch.
Ken H>
--- In Homebrew_PCBs@yahoogroups.com, Stefan Trethan <stefan_trethan@...> wrote:
>
> Yes, bummer, as you put it.
>
> Still looks very nice as component legend!
>
> ST