I have had alot of people ask about the drag engravings that I do, so I made one that will fit a collet, Took some crappy pictures along the way.  Tossed them into a crappy video and here you go.  Simple yet very effective.

https://youtu.be/4qLc_jAR5ks

Here it is doing a bit of work.

https://youtu.be/tcOKVlcnoiM