I wonder if a super hard drill bit would work. I had to get one of these to drill through spring steel. They’re spun slower and I was told to use ample amounts of cutting fluid. Sorry to hear of your lousy luck. Lar -------------- next part -------------- An HTML attachment was scrubbed... URL: <https://www.moypiano.com/ptg/pianotech.php/attachments/20111004/55af4073/attachment-0004.htm>
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