In the past I had to cut quite a few keyways on my lathe for some projects. I did this using a HSS parting blade in the lathes toolholder and cutting the key
Diamond Turning: a Single-Step Process to Create Precise Parts with a Reflective Finish — Smart Material Solutions, Inc.
Spare Parts #1 - Making, Hardening And Tempering A Keyway Cutter For The Lathe
MACHINE SHOP TIPS #151 Cutting a Keyway on the Lathe - a new ''abroach tubalcain
Keyway cutting tool for the Mini Lathe - Part 1
Cutting a tiny keyway using the mill as a shaper.
Benchtop Mini Metal Lathe, Brushless Motor
MACHINE SHOP TIPS #151 Cutting a Keyway on the Lathe - a new
Condition is Used. Use your milling machine to cut keyways using this keyseater, Mill turns spindle at top that then rotated the cutter at the
National Machine Tool 2-1/2 B Keyseater Internal Rotary Broach Key Way Cutter
Keyway Broach Tools - CNC Broach Tools™
Carbide O-Ring Dovetails for Lathes
Toolmaking
Machining A Replacement Pulley With A Keyway
Keyway cutting tool for the Mini Lathe - Part 1
Keyway Cutting Tool for the Lathe, 3D CAD Model Library