Tis true. It will be "centered" when I finish the feed, but I would rather not move the pinblock with the drill bit while drilling. The bit will bend and that side pressure in the hole is just not what I am after. One drilling, one clean hole for me. Granted, this is with the pinblock out of the piano and on a drill press. I have not tried the in-piano method, though I hear it is stellar. Either way, I am sure practice makes great. Shawn On Wed, Aug 11, 2010 at 8:07 PM, Ron Nossaman <rnossaman at cox.net> wrote: > Shawn Hansen wrote: > >> When double drilling, I am most worried about getting the pinblock in the >> EXACT same place as the initial drilling. Most of the suggestions I have >> seen for initial to final drill sizes can be as little as .010" difference. >> It is hard for me to feel comfortable thinking that the 230 or so times I >> drill this block the second time, I will be within 1 blue paper punching >> every single time. I just think I have increased my chances of being >> inconsistent. >> > > One of the inescapable characteristics of double drilling is that it's > nearly impossible to NOT center the second pass on the first hole. It self > centers automatically. The only way I can think of to screw it up is to > clamp it securely enough that it can't self center. The method was designed > around this phenomenon. Defeat the phenomenon, and you invalidate the > method. > > > > > good luck with the double drilling. > > I have very good luck with the double drilling, but then luck really has > nothing to do with it. > Ron N > -- Shawn Hansen RPT certified piano technician 816.896.4047 -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://ptg.org/pipermail/pianotech.php/attachments/20100811/aed19a83/attachment.htm>
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