Ron, is it possible to send us a picture of your drilling set up? Or maybe a description? I loved your class in Salt Lake but was not present for your discussion on pin block drilling. Thanks for all you add to this list. It means a lot to a lot of people! ----- Original Message ----- From: "Ron Nossaman" <rnossaman at cox.net> To: "Pianotech List" <pianotech at ptg.org> Sent: Friday, May 25, 2007 9:25 PM Subject: Re: Odd pin block > >> When I double drill, since accuracy is the point, >> it's hard to center the second pass on the first hole unless I switch >> bits before moving on to the next hole...a real pain. >> >> I assume you don't change bits for each hole, right? If you come back to >> all the 1/4" holes for the second pass,how do you spot the center. >> >> Jim I > > > All the 1/4" holes first, then all the 6.8mm. Just one bit change between > passes. It has always been my impression that it would be difficult not to > center the second pass. I drill in the piano, with my hovercraft drill > press setup, and the second pass seems to center pretty much automatically > with a regular jobber bit. Maybe there's a potential problem I'm not aware > of here. What sort of drilling rig and procedure do you use? > Ron N >
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