Products Canada Broach produces and sharpens broaches of every size and shape - keyways, rounds, splines, serrations, squares, hexagons and special forms - for many companies from coast to coast. Keyway broaches machine a slot on the inside bore of a workpiece. The keyway can be broached in a part very quickly. The keyway broach may be a rectangular bar guided by a workhorn. It may be a single spline internal broach or it may be an arbor with the broach screwed into a slot.                      Round broaches are used to finish holes in parts where close tolerances and good surface finishes are required. They are either pulled or pushed through the work pieces. Round broaches usually have roughing semi-finishing and finishing teeth. Each tooth increases in diameter up to the finishing teeth which all have the same diameter.                      Spline broaches cut splines in previously produced holes. It is one of the most widely used broaching applications. The splines are generated by the top of the tooth. Straight splines involutes or serrations can be produced by this method. Serration broaches produce a series or set of teeth or notches into the workpiece. Squares, hexagons and special form broaches are also available.