Homebrew PCBs

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
>
>
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>
>
>
>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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