--- In
Homebrew_PCBs@yahoogroups.com, "Dave Mucha" <dave_mucha@y...>
wrote:
....
> When I got my T-TEch machine, it came with a couple sheets of 1oz dbl
> sided with a very white substrate. the copper pealed off very
> easily. So easy that it was easier to peal than to use the cutter
> to clear large sections of unused area.
>
> The FR-4 I used next was next to impossible to peal and the CM-1 I
> now use is very easy compared to FR4 but not quite as easy as the
> other stuff.
Maybe this is a stupid question but why whould you want copper that
peels off that easily? I have enough trouble trying to AVOID lifting
pads and traces that any gain from clearing large areas would be lost
to damaged boards. I want my copper to adhere very tightly. (there's
a bad joke in there but I shall desist). Wouldn't the large areas be
better left as ground planes?
Phil