Instead of poly watch l've always used an auto product made by the German outfit Zymol called "QUIXX". It's a (2) step process. I use lambs wool on my bench drill @ around 1200 RPM so I don't risk burning anything. Sometimes, I even like to buff leather straps. I guess I'm into 'Buffing". Lol Anyone else use the "wrong product on their precious baubles?
I use Brasso liquid to polish plexi crystals. A soft cloth to shine up cases. A damp toothbrush to clean caseback gunk. And a 60 grit buffing wheel at 60,000 RPM to polish my Invictas. <last one was a joke OK! I don't have any Invictas>
Another Brasso user but the wadding, agree, great on acrylic. Cases, occasionally hand polish with "Autosol" metal polish.