Mix Drywall Mud to a Different Consistency for Each Coat

The Problem

Mud straight out of the bucket is thick, stiff, and full of air. Spread it that way and it drags under the knife, dries out before you can wipe it down, and leaves the lumpy, over-worked patches that fill beginner-drywall photo threads. The people who can't get their mud to move the way it does in the videos usually aren't missing technique — they're missing water.

The Technique

Always mix your mud, and match the consistency to the task. Add water a little at a time — a couple of small scoops, mix, check — because you can't take water back out.

1. Barely mixed, no water added. Mixing alone (no water) already transforms how mud spreads. Keep it this thick only for deep fills: pre-filling gaps, first coat on screw heads, or building out a proud corner bead. The less water in the mud, the less it shrinks as it dries.
2. First-coat consistency: a couple of scoops of water. Still thick, but it moves. This is the working body for coating tape, butt joints, and corner beads — it wipes out smooth with little porosity and doesn't shrink much. Feather the edges and it needs almost no sanding.
3. Final-coat consistency: wetter, drips slowly off the knife. Final coats leave very little material on the wall, which pulls the moisture out fast — so the mud has to start wetter. At this consistency it wipes tight, the porosity disappears, and the edges sand easily.
4. Hand-taping consistency: the thinnest of the hand-work muds. Wet enough to have real movement and drip readily. It spreads fast, lets you wipe the tape down in a couple of passes, and leaves the thin layer of mud underneath that the tape needs for adhesion.

Thinner than that — soupy, big bubbles when mixed — is only for pump-fed taping tools and corner flushers. For hand work it just shrinks heavily and makes a mess.