estebanana -> RE: Old shellack (Feb. 2 2017 22:51:59)
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I have regular button shellac on a thing I made in 1994, theres no problem. Clarity might be an issue. Shellac with wax left in it seems to be more "self healing", the edges of the injured area close and round over. It can also be a bit soft, although I think when shellac films take fingerprints, or soften it might be probably the way it was applied and not the shellac at fault. When shellac takes fingerprint I suspect it is because the worker applied in such way as to not allow the layers to evaporate out the vehicle, alcohol, and the film becomes thick and wet. Then it can take a while for the stuff to dry and weather conditions can effect the wood under the shellac or other problems, of course if the shellac is good. I almost never have a bad bag of flakes, but I think it happened once or twice in the past. There were some lines of shellac product that many people bought and had trouble with, some of the lemon yellow stuff had issues for example, but by now those lines have been vetted off the market by customer reports.
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