---------------------- multipart/alternative attachment Mark Cramer wrote: > I'm currently 'r&r'-ing the wips for an August-Forster action. The spring > slots have an amber-colored, paste-like friction treatment which has left a > greenish coating on the springs. > Never did figure out what that stuff was. But you see it a lot on Eastern European pianos. I dont know how many Forster uprights I've had to repin. Zimmermans also but to a lesser degree. I have even seen this stuff show up in Tzech pianos. Not much to do if it gets sticky but to either re-flange (use wood instead of that plastic stuff they come with) or clean and repin the bushings. > > Wait, it's not as bad as you think. The green stuff wipes off easily, the > springs are shiny and smooth, and slip freely within the groove. This action > is eighty-years old, though it looks brand new. > I think the green you see is standard green gunk... on springs lubricated with vasiline or some such creative solution. Clean and use a better lubricant me thinks. > > I see no reason to remove the gunk and attempt to replace it with something > else. I'd just like to know what it is, and if indeed there are any concerns > leaving it behind. That amber stuff usually ends up causing the action to frezze up. My only guess is that it is left over lubricant of some sort. > > I'm sure those of you working with European instruments will have an answer, > especially Richard or Isaac. > > Cheers RicB -- Richard Brekne RPT, N.P.T.F. UiB, Bergen, Norway mailto:rbrekne@broadpark.no http://home.broadpark.no/~rbrekne/ricmain.html ---------------------- multipart/alternative attachment An HTML attachment was scrubbed... URL: https://www.moypiano.com/ptg/caut.php/attachments/63/e9/5b/0e/attachment.htm ---------------------- multipart/alternative attachment--
This PTG archive page provided courtesy of Moy Piano Service, LLC