drill bits

[David ilvedson]

Hi Marcel,

I believe we met in the Yamaha Disklavier class in Santa 
Clara, CA.  I asked you about "2 Pianos/Four Hands"...
I haven't had a chance to talk to the pianists and say hi for 
you as they are not there when I am.  I heard today that Ted 
Dykstra is in Australia getting another production of the show  
going.  Looks like he has a number of them going on with one 
production with two women doing the parts.

Good meeting you...

David Ilvedson, RPT



Date sent:      	Tue, 29 Feb 2000 12:45:50 -0500
Subject:        	Re: drill bits
From:           	Marcel Carey <mcpiano@globetrotter.net>
To:             	<pianotech@ptg.org>
Send reply to:  	pianotech@ptg.org

> le 00/02/29 09:45, Greg Newell à gnewell@EN.COM a écrit :
> 
> > Greetings folks,
> > I'm about to begin replacing my first pin block and although I've
> > watched it done before and read about it a fair amount I'd like to ask a
> > question. It seems to me that a fair amount of the problems incurred
> > when drilling a pin block are from the heat generated in the process.
> > How am I doing so far? Well, I was thinking the other day while plunking
> > out a tuning for a rather mediocre upright that it might be a good idea
> > to pre drill the hole with a smaller size drill first.
> 
> Hi Greg,
> 
> Depending on the new pin-block you will use the choice of bit can be
> different. You need more size difference between the size of the bit and the
> tuning pin if you are going to use the multi-ply maple (Bolduc) block. On
> the other hand, if you use the delignit, you need less and the spiral of the
> bit should be different as well. What I did when I first started drilling
> blocks was to go to a good machinist supply house and buy different size
> bits and made test. I had some bits modified so that they would have only
> 1/2" of the specified size, above that was grinded ssmaller so that the
> removed material would come out easier and not burn. The two things that can
> influence your stability are speed and feed. If you check what comesw out of
> the block when drilling and feel the machine, you should be able to get a
> consistent result. Take your time. If you plan to do many, I would recommend
> you get the bit cooler that Webb Philips sells. It attaches to your
> compressor and really cools the bit plus, it clean the block as you go on.
> 
> Hor this helps,
> 
> Marcel Carey, RPT
> Sherbrooke, QC
> 
> 
> 


David Ilvedson, RPT
Pacifica, CA
ilvey@jps.net