Klarinet Archive - Posting 000182.txt from 2011/08

From: "Forest Aten" <forestaten@-----.com>
Subj: Re: [kl] Klarinet Digest, Vol 18, Issue 28
Date: Fri, 19 Aug 2011 13:59:47 -0400

Keith

The Valentino pad top (above the backing) is in two parts. (this per a discussion with Pete) The viton cover....and
closed cell neoprene (or similar material) below. If you look at the pad from the side with a magnifying glass, you can
see the very distinct layers.

Forest

>
> Neoprene is a possibility; its sealing properties are similar to Viton,
> though it is more temperature sensitive. I would prefer Viton was chosen for
> its better temperature stability for hot glue mounting.
>
> However, you can't use the high density (non-foam) variety of either, as it
> simply sticks too well to the tone hole.
>
> Wolfgang Lohff and Andrew Kirby in the UK have done and continue to do much
> research on pad materials. The story is not over.
>
>

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