In article , dpb wrote:

Smitty Two wrote:
...
coplanar random orbital sanders. Much easier to use, and no risk of
scalloping the floor.

_LESS_ risk...any time you attack something w/ that coarse a grit paper,
a misstep has potential for dire consequences...

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Agreed. Still, I'd say we're talking at least one order of magnitude *
rather than an incremental * minimization of hazard.