S&S Sound - 2

JIMRPT@aol.com JIMRPT@aol.com
Sat, 07 Dec 1996 12:45:14 -0500


Avery;
 There are numerous schools of thought on liquid, sic "chemical", hardeners.
Two of the schools are laquer and acetone/keytops. Each of these have their
advantages and their disadvantages. Perhaps thhis would be a good time to
review each.
1. Laquer w/thinner; this is a rather traditional treatment and has served
its purpose for many years and in many different situations. This combination
forms a solution when mixed.
advantages: a. very easy to apply in the areas desired.
                   b. percentages can be changed quickly and easily.
                   c. amount applied can be readily controlled.
                   d. due to relatively even absorbtion subsequent hammer
filings provide
                      a relatively even voicing to work with.
disadvantages: a. slow drying/curing time causing change of
                            tone over a long period of time.
                        b. can cause "tinniness/thinness if overdone.
                        c. very dependent on percentage of laquer to
                            thinner ratio.
                        d. not a reccomended last second cure for tonal
                            problems right before a concert/performance.
2. Laquer w/acetone ; same as above but with faster drying/curing time and is
more
                                   amenable to last second voicing problems.

3. Keytop w/acetone; not as traditional as laquer but useful nontheless. This

combination forms a suspension when mixed.
advantages; a. easily applied on the areas desired.
                    b. amount applied can be readily controlled.
                    c. relatively fast drying/curing time making this an
excellent choice
                       for those last minute situations.
disadvantages: a. takes longer to change percentages in a given mixture.
                        b. due to being a suspension rather than a solution,
not as evenly
                           absorbed as some other mixtures.
                        c. due to relative uneven absorbtion subsequent
hammer filings
                            provide more of a voicing challenge.

Avery these are just my thoughts and opinons and I am quite certain that
there are others who have differing thoughts and opinions. I am not touting
one system over another, just trying to point out some of the characteristics
of each.
Jim Bryant (FL)






This PTG archive page provided courtesy of Moy Piano Service, LLC