Bolduc Block - Bit Size - Torque

[Farrell]

Good point Richard. And hence, in part, why my questions. I wonder if it is not my two pass drilling method that is affecting results. I wonder what drilling process was used for the Mike McCoy tests - and as you point out, what kind of drill rig they used. 

I am using my overhead drill press which does a wonderful job of holding the drill bit at my specified angle very steady. I also bought a very good after-market chuck for the drill to minimize runout. Perhaps my straight running drill bit and my steady drill press are drilling smaller holes than other setups might drill.

I had looked at the McCoy spreadsheets previously, and thanks Ron N. for posting the update. But this being only my third job drilling a pinblock and first on a Bolduc block, I tend to have these very basic questions - and there is quite a bit of conflicting info. Just trying to get as much info as possible to see what the range of experience and opinions are out there.

Terry Farrell
  
----- Original Message ----- 
From: "Richard Brekne" <Richard.Brekne@grieg.uib.no>
To: "Pianotech" <pianotech@ptg.org>
Sent: Wednesday, June 18, 2003 5:29 AM
Subject: Re: Bolduc Block - Bit Size - Torque


> 
> 
> BobDavis88@aol.com wroteTerry Farrell writes:
> 
> >
> > We have used many Bolduc blocks, and like them. We used several sets
> > of 1/0 pins, and I decided that I don't like the feel in non-bushed
> > pianos, so we went back to 2/0. I drill .250 in one pass, and come out
> > about 120-130 inch pounds right after. I'm surprised Terry's are
> > coming out that tight.
> > Bob Davis
> 
> Hi Bob.
> 
> Im curious as to whether or not you are drilling by hand or using a
> mounted press... or what.
> 
> Cheers
> RicB
> 
> --
> Richard Brekne
> RPT, N.P.T.F.
> UiB, Bergen, Norway
> mailto:rbrekne@broadpark.no
> http://home.broadpark.no/~rbrekne/ricmain.html
> http://www.hf.uib.no/grieg/personer/cv_RB.html
> 
>