I go through a simple step-by-step process using a diode laser with an Xtool Rotary Attachment to laser etch custom-made stainless steel tooling.
ATOMSTACK X20 Pro Laser Engraver with R1 Pro Rotary Attachment
https://amzn.to/49bXGNW
12 Oz - BLI101 - Aerosol Black Laser Ink for Metals Marking - CO2 Laser
https://amzn.to/3whkEoc
2 Oz - BLI101 - Aerosol Black Laser Ink for Metals Marking - CO2 Laser
https://amzn.to/3wp6iSz