Homemade broach slotting tool

[Toolmaker51]

One extra kick for difficult materials adds 1 tooth, around half the feed distance higher, than entry tooth. Stagger reliefs and leading edges with a narrow cut off wheel; lessening tool load, narrower chips and promoting that extra drop of cutting fluid reaches area intended.
Examining a broach for a better description , also typical in larger forming broaches, hexes, rounds etc.