Bolduc Block - Bit Size - Torque

[Farrell]

"I don't put much tip on the tuning pins..."

How do you determine how much angle? Isn't this determined by each individual plate - and may even vary from one section of a plate to another (agraffe section vs. capo section)?

Terry Farrell
  
----- Original Message ----- 
From: <BobDavis88@aol.com>
To: <pianotech@ptg.org>
Sent: Saturday, June 21, 2003 1:47 AM
Subject: Re: Bolduc Block - Bit Size - Torque


> Richard.Brekne writes:
> 
> > You say you drill out of piano.  How is it you insure that the pin holes 
> > are exactomundo - right on the button-no bones about it - perfectly in the 
> > right spots each and every time. 
> 
> I use methods similar to those already posted by others. Set of center 
> punches to mark the holes. if I err, it's on the side of very slightly too small a 
> punch, set towards the keyboard side of center. I don't put much tip on the 
> tuning pins, and this gives me a little insurance against them rubbing the plate. 
> Incidentally, I've tuned pianos where they DID rub the plate, and I didn't 
> find it a problem.
> 
> I think the most important part is the careful fit of the block to the 
> flange. We try to have almost continuous contact along the flange, clamp the block 
> to the plate (vertically and horizonally) to insure good location for the 
> screws, and leave the clamps and screws in place while marking for the pin holes. 
> 
> After it's drilled, we screw it back to the plate to check the holes. I'm 
> sure I'm the only person in the world who has ever missed (wandering bit, hard 
> spot in the block, etc.), so I'll just confess if it's a tiny bit off, I enlarge 
> the plate hole slightly, in the direction I need to, with a round file. It 
> doesn't show. If it's off more than a hair, I plug and re-drill. When all is 
> satisfactory, we spray the plate.
> 
> Bob D
>