All purpose powder filler is a high strength powder filler which is the ideal choice for most indoor repairs when mixed with water the filler is ready to apply in one minute and dries in about one hour to a smooth sandable finish due to the high levels of added pva powder this filler will not shrink or crack and is strong enough to accept nails and screws benefitsheavy duty tough filler will accept nails or screws when dry non shrink overpaintable with most solvent based and emulsion paints ov