Don't try the heat gun. If the heat gets concentrated on one spot, you may have broken strings to contend with. John M. Ross Windsor, Nova Scotia, Canada jrpiano@win.eastlink.ca ----- Original Message ----- From: "Andrew Anderson" <andrew@andersonmusic.com> To: <ilvey@sbcglobal.net>; "College and University Technicians" <caut@ptg.org> Sent: Friday, October 07, 2005 9:35 AM Subject: RE: [CAUT] Grease/Oil on upright pressure bar > Most do have evidence of lubricant to a greater or lesser degree. The one > that was the worst, so far, had terrible unisons when I got to it. (I > think the lubricant got all the way to the bridge in the treble.) > > The pin block is tight, the pins are "springy". The average humidity is > 60% Rh right now. In Laredo there aren't any mountains between us and the > cost so it doesn't get terribly dry relative-humidity-wise. Think > south-Texas. > > So, this is a foreign substance. What is the least damaging way to get it > out? I've mentally debated trickling various solvents down the wires over > the bar into a rag below. I don't like that idea. Another that came to > mind is using the heat gun to mobilize it with heat and forced air out of > that position. That also has its drawbacks, maybe less so than the first > idea. Anyone have tested ideas or want to hazard some opinions? > > PRN =/= as needed > TAMIU = Texas A & M International University > > Andrew Anderson > > > At 07:59 PM 10/6/2005, you wrote: >>Sorry for my ignorance but explain: PRN? TAMIU? If all of the >>Bostons, or majority of them have this stuff...sounds like someone lubed >>them. The factory isn't going put something in the piano that attracts >>dust/dirt. These are basically Kawais. You could have dried out >>pinblocks...Texas. Seems to me Avery can talk you through this... >> >>David I. >> >> >> >> >> >> >>----- Original message ---------------------------------------- >>From: "Andrew Anderson" <andrew@andersonmusic.com> >>To: "College and University Technicians" <caut@ptg.org> >>Received: 10/6/2005 5:24:07 PM >>Subject: [CAUT] Grease/Oil on upright pressure bar >> >> >> >Hi, >> >I'm tuning on a PRN basis for TAMIU here in Laredo. They finally >> >decided their black cages full of warbling songbirds and howling >> >seals needed a little discipline. (The grands are better, 50 to 80 >> >cents sharp on the top octave though, every piano.) >> >> >They have a bunch of Boston uprights (UP-125 II) that are proving >> >quite annoying. There is very little discernable friction between >> >the tuning pin and the speaking portion of the wire. I got >> >suspicious, went to the restroom and got some white paper. Swiped >> >the wires, yellow stuff, swiped the underside of the pressure bar, >> >more yellow stuff. Not very thick, but collecting dust anyway. When >> >I massaged the wires with the beat suppressor after the first pitch >> >correction pass I noticed that the wires were collecting a little >> >dust too, sticky. ... These are fairly new pianos, couple years at most. >> >> >When I say low-friction, I mean I can put my little hammer vertical >> >on a pin and walk a unison above and below tune without stressing my >> >pinky. >> >> >Is this normal? Making unisons stable is a bit of a chore. No >> >wonder they were warbling & howling. Do they come from the factory >> >this way? or did one of the past piana toonas oil everything up? >> >> >Over lubricated in Laredo, >> >Andrew >> >> >_______________________________________________ >> >caut list info: https://www.moypiano.com/resources/#archives >>_______________________________________________ >>caut list info: https://www.moypiano.com/resources/#archives > > > _______________________________________________ > caut list info: https://www.moypiano.com/resources/#archives >
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