John,
You said you were using fingernail polish remover (acetone). If you go to your local hardware store and get acetone (higher concentration) or any kind of paint or lacquer thinner, your results will be dramatically different.
Just remember to leave your windows and doors open when you are using the concentrated solutions, i.e have plenty of ventilation and no cigarettes! :-)
Frank P.
--- In Homebrew_PCBs@yahoogroups.com, anachrocomputer <anachrocomputer@...> wrote:
>
>
> --- On Wed, 11/8/10, Stefan Trethan <stefan_trethan@...> wrote:
> > From: Stefan Trethan <stefan_trethan@...>
> > Subject: Re: [Homebrew_PCBs] removing toner?
> > To: Homebrew_PCBs@yahoogroups.com
> > Date: Wednesday, 11 August, 2010, 16:47
>
> > Because it takes less seconds to
> > scrape it off mechanically.
> > It is very brittle and comes off easily.
>
> Ah, I think I can see the reason for the different methods! When
> I do toner transfer with an HP LaserJet 4+, the toner is not
> brittle at all, and does not come off easily. I use acetone
> (sold in the UK as finger-nail polish remover) and a rag, but
> I have to rub quite hard, and it takes some time.
>
> Different toners seem to require different solvents and techniques.
>
> --
> John Honniball
>