Homebrew PCBs

On Wed, Apr 28, 2010 at 12:44 PM, Leon Heller <leon355@...>wrote:

>
>
> On 28/04/2010 15:17, andrewmv@... <andrewmv%40ymail.com> wrote:
> > I'm often finding that my toner transfer boards are ALMOST usable, but
> have a few trace breaks that need to be touched up by hand before etching.
> >
> > I've seen it said several places that ordinary Sharpie markers make
> suitable resist-ink for this purpose (I actually remember buying an old
> Radio Shack home PCB kit that came with a Sharpie and called it a "resist
> ink pen").
> >
> > I recently tried this using a Sharpie-brand "ultra fine-point,
> super-permanent ink" pen, but the FeCl ate right thought the ink.
> >
> > Has anybody had lucks using Sharpies as resist-ink? Are there any
> recommendations on something better?
>
> Staedtler makes very good ones. I used to use them.
>
> Leon
> --
> Leon Heller
> G1HSM
>

What particular Staedtler pens did you use as resist-ink?

-Andrew


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