[pianotech] re. Pin driving fluid search

Joseph Garrett joegarrett at earthlink.net
Tue Apr 20 10:27:52 MDT 2010


Al asked: 
"My question to those using PDF is, how do you use it, without making a mess 
of the plate and yourself? Not seeing this done, I can't picture to process.

Al,
If I am stringing a piano w/o plate bushings, it's pretty straight forward. Spinet hammer shank; dip in a plastic cup of PDF; let drip; swab the hole(s), (I usually swab one unison at a time); drive pin, (after pre-coiling wire on to it); set coil; finish driving to proper level.
If I am doing a piano with plate bushings, I have all of the bushings in a solution of PDF, (10%) and synthetic reducer, (the thinner for my PDF), (90%). I let them soak over night so that they all become "water-logged" and sink in the solution. I take 2 unisons out of the solution and let them "dry" somewhat, on a paper towel, while I am premeasuring wire, etc. This keeps them from squirting all over the darned place. The reason for this proceedure is to make the bushing very pliable so that it won't get a permanent malformation. The T.P. squishes through it and doesn't split the bushing.
Hope that helps.
Joe


Joe Garrett, R.P.T. (Oregon)
Captain, Tool Police
Squares R I
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