Win, When you're dealing with polyester, a cloudy finish can be one of two things. 1 - The satin finish is achieved by sanding the poly with a fine grit sandpaper. When rubbing a polyester finish in this way, it tends to have a much duller or cloudy look than a lacquer finished which has been rubbed in the same way, with the same fine grit sandpaper. I generally fix this with a good polish to eliminate the cloudy/dull look. 2 - If the finish looses adhesion from the substrate, it would give you a whitish/cloudy look. The best way to see if this is the case, is to check for lifting anywhere on the finish, usually at the ends. If the cloudy effect you see is over the entire piano, it probably isn't a lifting or adhesion problem. Al From: wimblees at aol.com Sent: Saturday, August 22, 2009 9:57 PM To: Pianotech at PTG.org Subject: [pianotech] cloudy finish What do I do with a light walnut satin poly Kawai where the finish is cloudy. If this were a lacquer finish it looks like too much moisture in the material. But this is happening on a 15 year old piano. It looks like dust, but it won't rub off. Willem (Wim) Blees, RPT Piano Tuner/Technician Mililani, Oahu, HI 808-349-2943 Author of: The Business of Piano Tuning available from Potter Press www.pianotuning.com -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://ptg.org/pipermail/pianotech.php/attachments/20090823/3e4488d1/attachment.htm>
This PTG archive page provided courtesy of Moy Piano Service, LLC