I was told today that if you put paint thinner on floor it would not gum up sand paper. It does not sound like a good idea to me or that it will not work. This floor needs 12 grit paper. Any comments.

lamp oil and kerosene is what ive heard. but the best thing is to charge for the extra paper and roll with it..

Maybe all those will work but I am not a fan of introducing flammable liquids into my work area and I'll bet most consumers are not either. Nor would they appreciate you burning down their house.

At 9 dollars a gallon, I wouldn't waste the paint thinner. For nasty floors , I charge more and use more sand paper.

I think it also has to do with the quality of the sand paper. As far as floor sanding, I really can't comment but for other sanding needs I know premium sandpapers like 3M Gold Fre-cut will reduce gumming up and help prevent cratering or 'fisheyes'. As far as floor sanders, I'm not sure what type of sand papers are available but I would use one with aluminum oxide abrasives and one that costs a little more rather than skimping on costs.

You can refinish hardwood floor yourself or hire a hardwood floor refinishing company to do it. In either case, there are several things you must determine for any kind of wood floor.