A range of high performance multipurpose wood fillers from Top Brands. Woodfillers come ready mixed and are rapid drying. Known as plastic wood, the substance is used to fill imperfections or nail holes prior to finishing. Often made of wood dust and a binder. It is essential to prepare the area you are looking to fill first, sanding inside of the area if possible and then removing any dust. Use a putty knife to apply the wood filler, filling the hole completely, then smooth off with the knife. The surface can then be sanded and depending on the colour you've applied, you may wish to paint or stain it once its dried.