The phrase "floor sanders" refers to machines that are used to smoothen and polish the surface of a wooden floor by removing the top layer of wood. Full definition
What about renting and buying floor sanders for resurfacing hardwood floors? (blog.taxresource.ca)
I met my hubby just days after he had purchased a house, and our first dates were me rescuing him from the big floor sander to take the dogs for a walk. (theletteredcottage.net)