Jim, Forstner bits ( that's the right spelling) are intended for created flat-bottomed cavities in wood ( such as pouch wells, clearences for bolt heads, and etc.) not drill-through. Peace, Thumpe -------------- next part -------------- An HTML attachment was scrubbed... URL: <https://www.moypiano.com/ptg/pianotech.php/attachments/20121220/978b0092/attachment-0001.htm>
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