One of my old Mentors, now deceased had a shop full of almost all Powermatic tools, still like new, he covered them when not in use and kept them wiped down. His shop was in his basement with a tile ceiling, florescent lights lots of them and a tiled floor.
He made a beautiful work bench, took it 300 miles to get the top sanded smooth with a big drum sander, then spent 3 weeks scraping the top to a sheen and using a Starret straight edge and a .0005 feeler gauge to get it absoulutely level. he used it also as an assembly and finishing table. when ever he was not using it as a workbench he had the side of a refrigerator cardboard shipping box on top of it with the corners notched and glued together with a 3 inch overhang all the way around.
I set a can of pop on it once, the pop was in a cooler cover, I thought I was gonna get bodily thrown out.