Instructions. Raw wood. Sand the support with 150 grit sandpaper, clean the surface from the sanding powder and apply 1-2 coats of product. Stained/impregnated wood. It is possible to apply RX1000 on a wood treated with low-solid content dyes or wood stains. Once the surface has been cleaned, sand with sandpaper or scotch brite. Then remove the powder and apply 1-2 coats of product. Coated wood. Sand with 80-150 grit sandpaper and bring the wood back to the raw condition. Clean the surface and apply 1-2 coats of product.