I believe they're called anti-nodes. The points of the wave where the amplitude changes the most. Since they reverse, I don't think there's a different name for the high spot â¦ or low spot.
A jointer may also be used to flatten the face of a board, in which case the sole focus is to produce a flat surface on the face of the board and the fence is not used. This procedure is often performed prior to edge jointing so that the board has a flat reference face for subsequent operations. jointer that is used for rebating has the outside ends of its blades also sharpened and set with a small clearance from the cutter head. A jointer cannot be used to create a board of even thickness along its length.
WWGOA Video: Jointer vs. Planer. What a jointer does and how it works. A jointer is used to make the face of a warped, twisted, or bowed board flat. After your boards are flat, then the jointer can be used to straighten and square edges (Guard removed for photo).