I have jury-rigged a spinner from an electric powerdrill, a workbench with a suitable adapter to hold it safely vertically, and a home-made cup to hold a ball. It's nothing for daily/professional use, but for a proper surface refreshment or even a full resurfacing job at home it's very effective. And, as a side benefit, it's demountable.
Letting the job be done by a local PSO might be the smarter solution, though.