My recommendation would be to first use our "Pre-Polish Finish Cleaner", then "Super High-Gloss Polish". Using a quality microfiber cloth (separate) for each product will provide the best results. Dave Swartz, RPT Cory Products <a href="http://www.corycare.com">www.corycare.com</a> <div class="gmail_quote">On Sun, Mar 13, 2011 at 3:36 PM, Ruth Phillips <<a href="mailto:ruth@alliedpiano.com">ruth@alliedpiano.com</a>> wrote: <blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">Ray, It can probably just be washed off with a mild solution of Ivory and water, then polished with the correct polish to restore anything scratched by the terry cloth - probably not a bad problem. Ruth Phillips <a href="mailto:ruth@alliedpiano.com">ruth@alliedpiano.com</a> >Hello guys, I have a customer who recently bought a Yamaha C3 grand with polyester finish. The instrument is about three years old. The problem is, the piano had a few smudges on the case and the guy sprayed it down with 409 cleaner and wiped it down with terry cloth. Well, his C3 now has a flat black finish. He calls me after the damage is done. I am a 42 year second generation tuner/tech veteran. I was an RPT for several years. I founded the Palmetto Chapter in South Carolina with the help of Marshall Hawkins who was Southeast Regional vice president at that time. Anyway, do any of you have any ideas on restoring the gloss to the finish of this piano? I'd really appreciate anything you can come up with. Many thanks, Ray Dellinger <a href="mailto:raya440@aol.com">raya440@aol.com</a> -------------- next part -------------- An HTML attachment was scrubbed... URL: <<a href="https://www.moypiano.com/ptg/pianotech.php/attachments/20110313/fb6c2506/attac%0Ahment.htm" target="_blank">https://www.moypiano.com/ptg/pianotech.php/attachments/20110313/fb6c2506/attac hment.htm</a>> ------------------------------ _______________________________________________ pianotech mailing list <a href="mailto:pianotech@ptg.org">pianotech@ptg.org</a> <a href="https://www.moypiano.com/resources/#archives" target="_blank">https://www.moypiano.com/resources/#archives</a> End of pianotech Digest, Vol 29, Issue 91 ***************************************** </blockquote></div>