This is a multi-part message in MIME format. ---------------------- multipart/alternative attachment Love what you are saying saying but its too hard to read. Sorry Tony Caught ICPTG Australia caute@optusnet.com.au ----- Original Message -----=20 From: Joseph Garrett=20 To: pianotech@ptg.org=20 Sent: Thursday, April 05, 2001 2:23 AM Subject: Pin Driving Fluid List, Several years ago, I did some tests on "Pin Driving Fluid". I used an = old 5 ply scrap of pinblock, similar to Bolduc stock. On several I = intentionally drilled way undersize, drilling two holes of each size, (I = use English, Letter and Metric bits. Chart available on request.) I = swabbed one of the holes with "Phenolic Varnish", from Rodda Paint and = left the other hole dry. I sized the tuning pins with a micrometer to = ascertain exactness. I then drove the pins to the height they would = normally be if in an "exposed" pin block. Then I waited an hour. After = the hour, I took my trusty Inch Pound Torque Wrench and attempted to = measure the lot. I found that ALL of the pins that were swabbed with the = "Pin Driving Fluid" were consistantly smoother. Also, they had less = propensity(?) to "pop" and had a lower torque than those driven "dry". = Several of the "dry" pins actually broke(!), where the pins with "PDF", = in the same size holes, DID NOT! Needless to say, I have been using Pin = Driving Fluid, religously, since. Hope this helps. By the way the = "Phenolic Varnish" "#1067-S1", from Rhodda Paints, does not have the = added "Driers" in it that regualr "Spar Varnish" does. I found this out = by furnishing a sample of my last bottle of Trefz Pin Driving Fluid, for = analysis by Rhodda's chemist. It's my opinion that regular Spar Varnish, = although "less bad" than driving "dry", it does not do the job as well = and I've found that poppy pins are more prevalent. Regards, Joe Garrett, R.P.T. (Oregon) ---------------------- multipart/alternative attachment An HTML attachment was scrubbed... URL: https://www.moypiano.com/ptg/pianotech.php/attachments/29/4c/ed/1a/attachment.htm ---------------------- multipart/alternative attachment--
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