How Long Does It Take For Wood Filler To Dry. Deeper fills can take as long as six hours before they are fully affixed to the wood. The best way to determine dry times is to look at guidelines for filler packaging.
This means your application needs to be fast, so it does not harden before you complete the application. Shallow repairs involving wood filler will only take 15 minutes to two hours to dry in most cases. Deeper fills can take as long as six hours before they are fully affixed to the wood.
