Emerson, Yes, the drill speed will affect the size of the holes. Also, the bit needs to be kept cool otherwise the holes will get bigger and bigger as it heats up. For speed, you'll have to test in a piece of scrap pinblock. Check for the chip that come out while drilling. There is speed of the bit but also the feed has to be stable. So my best advice would be to take your time, and be on the lookout to prevent overheating the bit. The safest way would be to drill twice. At first with .250 bit and then with your .266. But test before (.266 could be a little tight from my experience). You sure don't want to end up with a piano that is a dog to tune. Marcel Carey From: Emerson at diprete-eng.com To: pianotech at ptg.org Date: Mon, 6 Apr 2009 11:15:01 -0400 Subject: [pianotech] Drilling a Pin Block. I must start by saying I am new to this list as well as new to rebuilding piano’s so please excuse my ignorance. I am rebuilding a 5 ft. McPhail grand and have a couple of questions regarding pin block drilling and installation. The new pin block material is DELIGNIT PIN BLOCK material and seems to me to be the hardest wood known to man. I am curious if anyone out there has a particular speed setting for the drill press and how different speeds affect the size of the hole. Currently I am using #2 pins and a .266 drill. Another question would be do I need to glue the block in? I don’t believe it was glued previously. Thanks Emerson Torrey _________________________________________________________________ Réinventez comment vous restez en contact avec le nouveau Windows Live Messenger. http://go.microsoft.com/?linkid=9650737 -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://ptg.org/pipermail/pianotech_ptg.org/attachments/20090406/6caf13eb/attachment-0001.html>
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