At >Anyhow, while I sit here and ponder all this can anyone explain the >necessity of that ridge/burr at the center of a Renner center-pin? > Hi Mark, It prevents the pin from walking out of the bird's eye. Regards Roger -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://ptg.org/pipermail/caut_ptg.org/attachments/20090408/b69e5b5d/attachment.html>
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