I had a name stamp made up for marking my knives some time ago, but hadn't worked out a way to cleanly mark the blade. If you hold the stamp and hit it with a hammer, you often get a double mark or shadow, or one side deeper than the other. I tried a deadblow hammer, but it wan't strong enough to mark it.
After messing around unsuccessfully with a number of options I thought of using my Number 6 Flypress. Plenty of punch and control with the 6 ton hit. I made a holder for it out of some old wagon axle on the lathe. Steps for making it below, the sizing will depend on your stamp size, you'll be able to work it out.
