Acetone/keytop mix?

[Denis_Brassard@BanffCentre.AB.CA]

        Reply to:   RE>Acetone/keytop mix?
Not all keytops will dissolve in acetone, so one should use celluloid based
materials such as pyralin. Acetone also evaporates, which means the mixture
is constantly thickening. I find the approach I prefer is to add acetone
until one is at the bordeline of translucentsy and opacity, somewhat like
skim milk. This is quite thin, but it is easier to add more than to take
out. I might add that I use dope with the utmost reluctance, usually at the
extremes .  Good  hammers do not need it and poor hammers will not convert
into good ones with it. The long term effects  are usually unpleasant tone
and a continuing battle to keep the hammers voiced. When new hammers are
too soft, they will generally improve with playing if only people will be
patient. Of  course, a performance piano will have to be ready when needed,
so a 'quick fix' may be unavoidable. Hope this helps.
Ted Sambell.

-------------------------------------Date: 10/11/95 9:31
To: Denis B
From: pianotech
  I have hard that the basic recipe for the hammer hardner used by S&S is
"One
keytop for about a cup of acetone".  I have some ground keytop material and
was
wondering if anyone could suggest what the recipe would be using this
ground
material instead of whole keytops. Any other suggestions as to it's use
would
also be appreciated.

                  Mark Diera