Hyde Tools 02850 6" Black & Silver® Joint Knife

work from a mud pan sized to the blade — load the front third of the knife off the pan's rim, and wipe the blade on that same rim on the return stroke. The rim is half the tool. Flex point: pressure at the center of the handle bows the blade so its middle rides a hair proud (leaving a joint slightly crowned to sand flat); pressure biased to one corner feathers that edge to zero. Learning to steer by bow instead of angle is the skill the carbon flex point rewards. Edge: keep the working edge clean and unnicked — a single dried crumb or a dinged corner scores a tram-line through every pass, so dress a dented edge flat with a fine stone or retire the knife to scraper duty. Carbon care, in practice: wash it the moment the compound comes off the wall, dry it, and if it's going into storage a wipe of light oil or a dry rag beats a rust bloom. A carbon joint knife that's babied outlasts the stainless one; a neglected one pits in a week.