I do a lot of poly repairs, and my advise is find someone else to do it for you. A good way to learn is to schedule the pro to do the repair when you can be there. Ask a lot of questions. Scuffs and scratches are easy to repair on most pianos. I do a lot of work on Samick products. They have a very thick finish that can handle most light scuffs and scratches. I have found that on the new Baldwin poly finished you cannot do this. The finish is so thin even light sanding goes through to the primer coat. Leaving a gray "halo" that is next to impossible to hide. Be careful on the the thicker finished too. If you get too agressive, and don't feather the sanding you leave a conspicuous (sp?) "wave" when viewed in the light at an angle. I could go on for days on the do's and don'ts of poly touch-up. Remember equipment and experience are your best friends. If you don't have either, don't even think about practicing on an instrument that is not your own. My advice Mike Bratcher
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