Did a "Google" and came up with this:
http://www.duall.com/store/product/103317.103317/calligraphy-duo-markers-black.html Not sure if this is what is referred to as "the
Staedtler" marker. Does say: "Odorless pigmented
ink flows smoothly and retains brilliant color
Lightfast and waterproof ink
At 12:55 AM 11/28/2006, you wrote:
>
>In a message dated 11/27/2006 5:34:09 A.M. Central Standard Time,
>lez.briddon@... writes:
>
>Do some other pens work better?
>
>
>
>I have READ that German-made Städtler red works good as lacquer paint, but I
>have NOT been able to find those locally.
>
>Sharpie black is all I have tried, and IF the copper has been CLEANED with
>lacquer-thinner and dried with paper-towels, and NEVER touched, that will
>"sorta work". But the Sharpie ink was never
>intended as "etch resist" so it is
>only "by accident" that it works at all. I
>suspect phases of the moon have to
>be JUST right for it to do at all. I have NO idea how the TEMPERATURE of
>the etchant affects the "life" of the Sharpie ink on the copper, but I think
>SPEED in handling and clearly GREATER than usual
>care is necessary for ANYthing
>good to happen with that! The etch-resist pens Radium Scat sold had a
>"thicker paint" but I haven't seen those in some
>time, now. No clue if they quit
>making those. But they didn't have much shelf-life at all!
>
>Surely there is a reader of this group who has money to invest who can open
>a little "PCB-Resist-Pen" factory and sell us
>EXCELLENT resist-pens that will
>last for WEEKS, even if occasionally left OPEN overnight, for 69¢ each!
>Wot? Jan Rowland
>
>
>[Non-text portions of this message have been removed]
>
>
>
>Be sure to visit the group home and check for new Links, Files, and Photos:
>http://groups.yahoo.com/group/Homebrew_PCBs
>
>If Files or Photos are running short of space, post them here:
>http://groups.yahoo.com/group/Homebrew_PCBs_Archives/
>Yahoo! Groups Links
>
>
>
73,
Mike, K4GMH
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