Rustins Professional Wood Filler is a two-part filler that provides a strong long lasting repair for all interior and exterior wood work. It hardens within 30 minutes at ambient temperature and produces a tack free surface. It is easy to sand and readily accepts Rustins Wood Dyes as well as Rustins paints and varnishes. Once fully hardened, it can be sanded, drilled, machined and planed and is particularly useful for carrying out repairs to the edges on joinery where high strength is needed. It is also suitable for marine applications.