Homebrew PCBs

Piers Goodhew <piers@...> writes:

> If you were looking for "further study" suggestions, I would try first
> sanding the FR4 to a mirror finish and then scuffing it up: the
> "weave" of the fibreglass def. affects pressure and therefore
> adhesion. (But, OTOH, you'd probably get very different thicknesses
> and therefore etch rates ...)

Hmmm... I did the board I was running the tests for, so my incentive is
gone, but that's something to try.  Also: sanding with various grits to
see if there's a "sweet spot" in the coarse/fine continuum.

I also discovered that toner doesn't like to stick to the non-copper
side of a single-sided PCB :-P so I'll have to try sanding that side as
well.

> I know I'd like to see that.

So give it a try and see, I'm not the only one here who can do science :-)