Bob Bergantino, RPT wrote: <<Why use Garfields or Glycerin if you have CA available? It's the way to go. I have even put in CA on top of a previous Pintite application (of 10 years ago), and it seemed to hold satisfactorily.>> Thanks for your input. One reason I was hesitating to use CA every time, is that it is almost too good. On a marginally tuneable piano, full treatment (I think - and I have done some experiments to this result) can leave you with pin torque of over 125 inch pounds. That seems like overkill. On a piano that begins with 5-10 inch pounds torque, then CA treatment puts you to 40-60-70 inch pound range. Is there a justifiable theory or logic in which one would give only a light CA treatment, because the torque was almost but not quite good enough before starting? OR - is every treatment a "full treatment." <<I would be interested to hear from anyone who did not find CA effective over a previous application of glycerine or CA.>> As previously stated, I had a dismal failure on a grand with negative pin torque that had been very heavily treated with Garfields. ( in spite of three ounces of CA, with the pinblock literally dripping excess CA during treatment. I experimented with several pianos and a number of old blocks and I have not seen any evidence that a former glycerine treatment interferes with successful CA treatment. Can CA treatments go on forever? - Every 25 years? - No more pinblock replacements! Bill Simon Phoenix
This PTG archive page provided courtesy of Moy Piano Service, LLC