Anyone tried MAAS metal polish on an acrylic watch crystal? The website claims: "Silver, Brass, Copper, Chrome, Stainless Steel, Aluminium, Gold, all Metals, Fiberglass, Plexiglas, Eisenglass, Mirrors, Clouded Glass & Crystal, Leaded Glass, Ceramics & Ceramic tile, porcelain, Enamel, Corian, Avonite, Granite, Marble, Laminates & Formica, Linoleum, Plastic convertible windows, Plastics, Plexiglas, Lexan, Acrylic, Powder coating, auto & aircraft paint (to remove stains and buff out surface scratches), solid vinyl, Polyurethane; all non-porous surfaces." A search turned up 2-3 references on watchuseek and rolexforum, so it has been used by at least a few, but clearly not large numbers. The stuff works wonders on metal; I just polished up some old Hamiltons and they look like new. Thinking of trying it out on the crystal of one, as I do not have any polywatch handy.
Closing the loop on using MAAS. The result: 'meh'. It did not do any harm, but I would use something else, like Poly, if I had it. The smaller scratches polished right out, but the deeper ones still there. I think something slightly more abrasive is in order.