I tried the eraser trick.
Soft non-abraisive eraser is just a thumb that doesn't get sore.
That's useful.
Abrasive eraser takes off anything it can get at. Unfortunately,
it can't get at the stuff between traces without taking the traces too.
Only thing I've found so far that's even close to working is a
fingernail between traces. Even that don't work when there are bends.
As for the fiber etch...
With the picture paper, the paper comes off with reasonable ease.
It's the clay coating that's stuck to the toner and the board.
I have no idea the actual composition, but that's what needs to
be dissolved. Don't think it's organic????
Hmmmm wonder what's in the laundry room for removing dirt??
mike
--- In
Homebrew_PCBs@yahoogroups.com, "Stefan Trethan"
<stefan_trethan@g...> wrote:
>
>
> > Wouldn't this work?
> > http://www.wwwearables.com/notions/fiberetch/fiber_etch.htm
> >
> > I don't know if it's appeared on this group before, but it's a gel
> > that dissolves plant fibers such as those found in natural fabrics and
> > paper, while leaving synthetic materials (toner?) alone. There may be
> > other brands, and it might be available in stores like Hobby Lobby.
> >
> > If the chemical they use can be located and obtained cheaply, perhaps
> > this would even eliminate the need to peel the paper away and risk
> > pulling off any traces. It may even remove the need to use photo
> > coated paper. But for now it's cheap enough to use for removing paper
> > fibers where the toner is needed for cosmetic reasons.
> >
> >
>
> It's sodium bisulphate.
> look here, a custm recepie:
> <http://www.maiwa.com/pdf/44-52cat99.pdf>
> someone buy it and try it please.
>
> ST