My parents have had a black baby grand piano since they got married. Needless to say, it's covered in swirl marks. Is polishing with a PC an option? Has anyone ever done something like this? My mom mentioned they have piano polishes specially made for this type of thing, so I assume it would come down to products, the clear coat depth, tools used, etc.
SV Wood Wax haha.. I would probably contact manuf or retailer as it may be varnished so some polishes may or may not be good for them. Dont know much but maybe a good dealer or manuf can provide some guidance.