"What drilling speed do you use on pinblocks?" I think most references suggest about 800 to 1,200 RPM (sorry, Reblitz not at my fingertips). I drilled a rotary-cut 7-ply block recently and had the bit spinning at 600 rpm. SOOOoooooo many variables here. I think these speeds are a good place to start. I suggest to get a chunk of the block type you will be using and drill, drill, drill at various speeds, see how it feels. Pound in a buch of pins and see how they feel. When you get a combination that gives the desired smooth torque, write it down and do the whole block that way. Are you using compressed air to cool the bit? I think this is pretty much a must. Worked great for me. Good luck. Terry Farrell Piano Tuning & Service Tampa, Florida mfarrel2@tampabay.rr.com ----- Original Message ----- From: "Richard Oliver Snelson" <rsnelson@dave-world.net> To: <pianotech@ptg.org> Sent: Monday, November 20, 2000 1:56 PM Subject: Pinblock drilling. Trying again for help! > Your thoughts on this please? > I found out today the the Mortiser sold by Garrett turns at 3500 rpm.. > The Delta unit turns at 1750 rpm.. Both too fast??? > > What drilling speed do you use on pinblocks? > > > Garrett Wade sells a 1/2 hp Hollow Chisel Mortiser that can be fitted > with a 3 jaw chuck drilling attachment. As a small drill press the > Mortiser has a 4" stroke and could be easily mounted to a slide board > for pinblock drilling in the piano. Because of compact size I think it > could sit very close to the drilling area. > > Garrett Wade's number: 1-800-221-2942 If you want a cat. > > If anyone could send me a picture of a drill press set up. Please do.. > Richard >
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