On 01/06/2009, at 2:57 PM, DJ Delorie wrote:
> To those who use TT without TRF: comments on how well toner alone
> blocks etchant? Do you get pinholes in the copper?
>
Just getting back to this - I get a few holes in the toner in larger
areas, but never actual holes through the copper. I am just fooling
with this and running ridiculously low on toner anyway, but I've
certainly never had a trace actually interrupted by a toner hole - I
do keep them as wide as practicable, plenty of 16mil ones, don't think
I've gone thinner.
(I did some unofficial Delorie spirals at 6mil, but I've yet to hand-
iron them evenly enough to bother etching)
PG