Glad to see you put that thing to good use
They make a smaller "ball" that I would think works better for all but the largest/flatest pieces. Also, if you use a thicker polishing compond on the ball it tends to not soak it up as much (ie. you use less). I actually used the stuff in the tub on my powerball.
It's a useful gadget that works good but not quite as good as a marketing department would make it sound. Anything is better than spending more time than necessary polishing wheels.. lol
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"A ship in port is safe, but that's not what ships are built for."
See Bad Penny run the cones:
https://www.youtube.com/watch?v=8GUPPIX-92U
1971 Chevelle Wagon - Roadster Shop Chassis ProCharged Shafiroff LS and lots of yada yada
1968 Camaro - Project Track Rat - 440 RHS LS