I'm with Stefan. After etching, I clean off the toner in running
water, using gentle pressure from a stainless steel pot-scrubber pad,
the same one I use for cleaning the copper beforehand.
It's fast, works fine, and, despite what you might fear, it doesn't
damage the 8-10 mil traces I usually use. No chemicals, no mess.
James Arthur
--- In
Homebrew_PCBs@yahoogroups.com, "Stefan Trethan"
<stefan_trethan@...> wrote:
>
> Don't use acetone to remove the toner, instead use a steel scraper or
> even the edge of another PCB to scrape the toner off mechanically.
> Then use acetone to remove any tiny bits that may be left and to clean
> the board.
>
> No the scraping will not damage thin traces if you don't scrape with
a corner.
>
> Some PCBs seem to be more prone to this clouding thing than others. I
> believe they are not all the same epoxy, or maybe some aren't epoxy at
> all.
>
> ST
>
> On 10/31/07, bagmik <bagmik@...> wrote:
> > Hi everybody,
> >
> > removing toner from a PCB after etching leaves toner impregnating the
> > epoxy, giving "black clouds" on it.
> >
> > Does anyone of you get the same ?
> >
> > Has anyone already solved the problem ?
> >
> > Mike.