[pianotech] Blocks

[Mark S Burgett]

Mason & Hamlin blocks are sealed at the factory and are available through WNG.



Mark

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From: pianotech-bounces at ptg.org [pianotech-bounces at ptg.org] on behalf of Euphonious Thumpe [lclgcnp at yahoo.com]
Sent: Tuesday, October 23, 2012 7:45 PM
To: pianotech at ptg.org
Subject: Re: [pianotech] Blocks

So, here again, is my "gauche" suggestion for protecting grand blocks from humidity: get a roll of thick metal foil tape from a proper HVAC supply store (not the cheapo-stuff sold by Lowe's, Home Depot and etc.) and put it on the block underside. (Maybe a good idea to shellac the block, too: on all sides.)

Thumpe


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From: Ed Foote <a440a at aol.com>;
To: <pianotech at ptg.org>;
Subject: Re: [pianotech] Blocks
Sent: Tue, Oct 23, 2012 9:19:01 PM

Ron writes:
>> ,It's not how many times a year you look, it's how many seasonal
extremes they've been through. I don't understand why the concept of wood under compression crushing cumulatively with big humidity cycles is such a tough concept.<

          It is a simple concept. I am of the opinion that it isn't a problem on the blocks I have direct experience with.  Some of these pianos I am talking about got their blocks in the early 1980's. If I don't see any appreciable lateral movement of the pin through the block after 30 years, I am not going to let that be a determining factor in my technique.
Ed Foote RPT