Homebrew PCBs

--- In Homebrew_PCBs@yahoogroups.com, "Stefan Trethan" 
<stefan_trethan@g...> wrote:
> 
> > I've removed small areas of copper by heating it with a large bit 
on my
> > soldering iron, after scoring it with a Stanley knife. It peeled 
off very
> > easily.
> >
> > Leon
> 
> That could just be a little bit too tedious for big areas.
> I tried heating with the heat gun and wasn't really convinced by 
the  
> results...
> 
> I guess i will etch the boards, further mechanical attempts were 
not  
> leading
> to good results.
> I'll see if  sticky tape is tight enough where it overlaps or if i 
need to  
> use paint...
> 
> ST

I found that FR-4 has an extreemly tight bond with the copper and 
some phenolics will allow you to peal away huge sheets.

With my etcher I route the traces isolation and then peal away huge 
areas of copper.  Time consuming to say the least.

My very white phenolic allowed me to peal the copper with minimal 
effort and the sufrace is smooth and looks untouched.

IF I had to do a large board of FR-4 I'd considder spray paint or 
floor wax.  both would be easy to put on and remove enough for future 
etching.

Dave