Is it safe to put an Optyx polyester ball through a light resurface (with sandpaper and the works)?

Thanks in advance.
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-Jeremy Vitug

The trickiest part, of course, is getting the polished surface back on these balls.

I scratched one while drilling it and ended up going from 600 to about 2000 grit wet sanding and finished it with rubbing compound then a trip to the lustre king.  I could still see a difference, but the customer didn't notice the spot.

I think a product such as Finesse-It from 3M would do a much better job at removing the 2000 grit sanding lines and returning the surface to a glassy polish.
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It's kind of hard to read the lanes if you don't know their language...