If the paint stripper, power washer, and nylon brush didn’t get enough of the paint off, use a belt sander, angle grinder, or random orbital sander. An orbital sander is a good option for removing any fuzzy wood fibers left behind from pressure washing. You can remove paint chemically with paint strippers or mechanically by scraping : Dremel/30 High Performance Rotary Tool Kit- 2 Attachments & 30 Accessories- Grinder, Sander, Engraver- Perfect for Routing, Black, Full Size, 32 Piece Kit , Remove rust, sharpen tool GRINDING/SHARPENING . Restore your furniture or appliances by removing rust or sharpen your tools so they're like new . Shaping, surface prepRemove the loosened paint using a paint scraper or wire scrub brush. Wash the area with warm soapy water, then rinse and allow to dry. Use Paint Thinner to Remove Paint from Concrete. If you are dealing with paint that is exceptionally hard to remove, like spray paint or an oil-based type of paint, you may have to use amercial paint thinner.May 03, 2022 · Manufacturers of concrete floor paint often suggest thinning the first coat with a little water before application. This will improve the absorption of the paint into the concrete. It is also best to use a paintbrush for the first coat, as brushing works better than a roller for working the paint into the surface.