... dust operation 4,Chip away concrete,asphalt,epoxy surface planer Scarifier, also called floor milling machine,or floor ... with blunt or flat TCT cutter, or flails, at high speed to chip away the surface of concrete, asphalt ... and rust;3, Repair common floor problem: uneven slabs, high spots, trowel marks, damaged concrete;4, Level uneven ... 5, The real picture after scariying concrete.... surface planer