Small spline broach manufacture - practicalmachinist
Traditionally these tools were made by grinding them from a solid bar of High Speed Steel on a tool and cutter grinder or on a surface grinder with a profile dressed grinding wheel and an indexer to index the blank. ... the best way forward is to mill a broach blank from A-2 or D-2 tool steel and harden it. ... it'd take you an hour each by ...
