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Paul,
We had some low torque readings (under 100) with the I bit (.272), and
six months ago switched to a two step drilling with 1/4"(.250) and
17/64"(.2656). Air cooled. No fluid. No complaints, almost two blocks a
day. The two step method reduces the effects of inconsistent feed rates,
and actually works out to about the same time. The bits are a little
cheaper also, making us less likely to try and squeeze out just one more
block from a tired bit. Attached is a nifty chart. It's from the nice folks
at Century Drill. twagner@centurydrill.com
later,
Guy
At 09:19 AM 7/22/2004 -0500, you wrote:
>List members and pin block installers:
>
>What drill size do you like for a 2/0 pin when using Delignet for the block?
>
>Paul C
>
>_______________________________________________
>pianotech list info: https://www.moypiano.com/resources/#archives
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