---------------------- multipart/alternative attachment =20 Davi WHat last longer? The bit? Dale: I=E2=80=99ve been double drilling block since this first appeared on the li= st about=20 awhile ago. It really does make a difference in terms of even and controll= ed=20 torque on the pins (assuming the pins are equal in diameter=E2=80=94not alw= ays the=20 case!) and takes away that stress of controlling feed speed. Plus, since=20= the=20 final bit takes out so little material, they last longer. =20 =20 David Love davidlovepianos@comcast.net=20 =20 ---------------------- multipart/alternative attachment An HTML attachment was scrubbed... URL: https://www.moypiano.com/ptg/pianotech.php/attachments/a0/24/56/9a/attachment.htm ---------------------- multipart/alternative attachment--
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