Homebrew PCBs

I did a post on using Scotch 33+ electrical tape for doing exactly
that, covering the second side of a double-sided board.  It must have
been in the diptr forum.  It's thin, pliable, and won't cause leakage
where the tape overlaps if you run you fingernail or a pencil down the
seam.

For large defect areas on the printed side, I use fingernail polish. 
I suspect one could etch for 6 months and that lacquer-based substance
wouldn't deteriorate!  It cleans up with acetone, which *is* still
used in fingernail polish remover.

Cheers,
Ted

For --- In Homebrew_PCBs@yahoogroups.com, "soffee83" <soffee83@...> wrote:
>
> --- In Homebrew_PCBs@yahoogroups.com, "kilocycles" <kilocycles@> 
> wrote:when I etched, the Sharpie areas etched away much more than the 
> >toner-covered areas (can't
> 
> I get that a bit as well. I'm usually extra careful now to let the wet 
> Sharpie crap dry thoroughly, and then redraw over top of it once or 
> twice, until it's nice and "dense" looking. I sometimes use a regular 
> "fat-tipped" marker for wide stuff too.
> 
> I was wondering if there were any easy techniques for masking really 
> large areas, like the whole back side, for instance? Seems like it 
> might help for doing double-sided stuff, if you could hit it one at a 
> time, while covering the other side with tape,etc. I hate trying to 
> protect the delicate toner work on one side during all the pressing 
> and heating for the second one.
> 
> -George
>