Hyde Tools 01540 4" Black & Silver® Stainless Steel Joint Knife

The single skill this knife teaches is embedding tape with mud left under it — enough film to grip, not so much it floats. Wipe from the center of a run toward each end at roughly 45°, firm and steady; if an edge lifts or a blister rises, lift the tape back to there, re-butter, and re-lay rather than burying the fault. Flex on purpose. Steer pressure toward the blade's center so the corners ride slightly proud and don't cut tram-lines. Angle. Low to load and bed; high and firm to wipe tight and shave a fastener. Pan discipline. Load from the pan, wipe the blade on the rim every return stroke — a crumb on the edge scores the tape coat, and the tape coat is the one every later coat inherits. Maintenance. Stainless, so wash and go; keep the corners clean and dress a rolled edge flat.