What Ron said are major factors in cure time and must be taken into account, but according to serval lacquer manufacturers, full cure (hardening) of nitrocellulose lacquer take about 21 days at 70 deg F. My rule of dumb. Get your nose up to it and smell. If there is absolutely no lacquer odor, you should be safe, but I wouldn't leave it there for an extended period of time unless you followed the 21 day guideline. Al - High Point, NC On Nov 5, 2011, at 3:38 PM, Ron Nossaman wrote: > On 11/5/2011 2:18 PM, David Love wrote: >> Sorry, off topic again, technical piano question not to do with signing in >> or paying bills on line. >> >> How long generally does a lacquer finish need to cure before it's safe to >> lay the piano on its side to move it without it showing a blanket imprint. > > > I intensely dislike refinishing, but have done enough (too much) for some general thoughts. > > It depends on the primer, finish, the rate of application, and the climate in which it was done and is curing out. Thicker finishes take longer. Too little time between coats and too high a build rate takes longer. Soft primer takes longer. A good polyester primer, not overly heavily applied and mostly sanded away, with thin subsequent topcoats allowing more time between coats than you'd like - days (warmer is quicker), produces the most durable finish in the shortest time that I've seen. There are vastly more experienced refinishers on the list that can hopefully correct me if that's contrary to their experience. > Ron N > -------------- next part -------------- An HTML attachment was scrubbed... URL: <https://www.moypiano.com/ptg/pianotech.php/attachments/20111105/92ec9377/attachment.htm>
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