Homebrew PCBs

I use standard FR4 0.8 or 1.6mm s/s and d/s. I tend to apply a lot of 
pressure and make 3 or 4 passes so I am through the copper and well into 
the board. On the other side a bit less is needed, juts make sure you 
are through the copper if double sided and have a decent scratch in the 
board. I know thats not very scientific description, but you get a 
'feel' for it after a few boards

I am not sure how well this works for other PCB types. I have some old 
phenolic board and will give it a try.

Stefan Trethan wrote:
>
> Same here.
>
> I always thought they might use different PCB material than I tried.
> Also there is the question about how deep one needs to score the boards?
>
> ST
>
> On Thu, May 13, 2010 at 10:55 PM, Harvey & Betty McRae
> <hlmcrae@... <mailto:hlmcrae%40telus.net>> wrote:
> > I have tried the scoring method, but I must be doing something wrong, as
> > mine always break back under the copper cladding.
> >
>
>