Timed drywall mud: Setting mud is labeled by the maximum amount of time you have to work with it before it hardens. You can choose from 5-minute mud, 20-minute mud, or longer-hardening times ...

The farther out the feathering goes, the harder it is to see the seams. Using your 6-inch drywall knife, apply the proper amount of mud (well-mixed and smooth). Transfer the mud with your knife ...

Timed drywall mud: Setting mud is labeled by the maximum amount of time you have to work with it before it hardens. ... Feather out the edges of the swaths well with the knife for a smooth look.