[pianotech] Pitch change, etc.

[William Truitt]

I did use the Delignit bridge stock to cap a treble and bass bridge on a
grand a few years ago.  The unisons were VERY clean.  Stinkin' ugly zebra
stripe notches.  Not easy to notch, but not terrible either.   I would be
inclined to use it if it weren't for the butt ugly factor.  

Will


-----Original Message-----
From: pianotech-bounces at ptg.org [mailto:pianotech-bounces at ptg.org] On Behalf
Of Ron Nossaman
Sent: Wednesday, April 07, 2010 8:33 PM
To: pianotech at ptg.org
Subject: Re: [pianotech] Pitch change, etc.

jimialeggio wrote:
> I think it would be useful to try and determine if there is any 
> advantage of  the various maple epoxy laminations over a delignit cap.
> 
> Do we have any data on this?

Not directly, but Delignit ought to make a first rate cap. The 
stuff sold by Delignit for bridge capping is, I think, not 
hard and dense enough. It's a little over 70% the density of 
the pinblock stock, and noticeably less hard. The only real 
benefits I see to epoxy/veneer laminations over Delignit 
pinblock stock are that it looks less like plywood because of 
the grain direction of the laminations, and it's less abrasive 
to edged tools when you notch.

If you want to try a pinblock grade Delignit cap, I have 9mm 
material.
Ron N