Earl, Thanks for the info. Newton would agree i'l bet. Dan on 9/10/01 9:12 PM, Earl S. Dunlap, Jr. at dunlapes@home.com wrote: > Dan, Newton, and List: > > I almost missed your inquiry, Dan, and would have if I hadn't seen it in > another entry. > > I just discussed this issue with one of my sons who at present is connected > with an industry that manufactures precision hypodermics for multiple uses. > He has also considerable experience in the electronics industry. > > The main problem they see with the use of silicones (silicone not = silicon) > in his present job is that once the products are present they are very > difficult (impossible?) to remove. Silicones are frequently used as a mold > release agent on the equipment used to form plastics. His present company > has found they present a problem of contamination in that their syringes are > used for some extremely sensitive analyses, and the silicones become or can > become contaminants! > > I think what I am going to say will fit in with what others have said: it > should be OK to use the correct silicones as lubricants in some > locations--read that "appropriate locations"--but they are extremely > difficult to remove if they get to the wrong locations. > > As an aside, I understand that silicones were early thought to have great > promise to become useful as replacements for hydrocarbon lubricants. > Unfortunately, in certain critical uses they tuned back into silicon! > (Silicon oxide = sand) I expect this related to flames and cylinder walls > and/or temperature though so relax. > > In technical piano work if silicones are really a problem to pin blocks, > tuning pins or anywhere else on the piano, and especially if silicones are > used fairly frequently, it might be a good idea if pins and the blocks are > handled only with gloves that are used for no other purpose and used to > touch <nowhere> else. Certainly, it might be useful to keep spray silicones > away from piano work. > > 'Best, > > EARL > > At 12:30 AM 9/8/01 -0500, you wrote: >> Earl, >> >> I have a question for you about using naptha and Baldwins silicone oil, >> (their recepie) to "treat" sluggish flanges. My friend Newton, strongly >> disapproves of using this mixture, because of the chance that the silicone >> will make its way into the pinblock, etc. >> Baldwin sells about 1/2 a pint of silicone oil, with instructions to >> mix it with one gallon VM&P naptha. I have been squirting it on flanges for >> many moons. Newton thinks I should be shot. Aside from silicones reputation >> for causing refinishing (fish-eye) problems, do you have any knowledge of >> its properties, for example, to migrate from the hammer shank flanges, to >> the pinblock, in a vertical piano? >> >> Thanks, >> >> >> Dan >
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