Is there a specific setting for using a diamond drag tool for engraving?

[magicniner]

I've not investigated speeds & feeds for Diamond Drag as it copes with a wide range of speeds when using a manual pantograph engraving machine, generally it will manage higher speeds than milling so just give it a go, it's definitely viable.
Attached is a test where the lower case in the smaller text is 1mm high, I didn't set the speed, just left it as BobCad/Cam set it for a .01mm tip V bit cutter and a .1mm DOC.
Experiment on some scrap, the diamond drag cutters are quite robust, I haven't worn one out yet ;-)

- Nick