Thanks again folks.
jeffro, here is a pic of the Dremel bits I use.
The small one is a Dremel #106 1/16" high speed cutter
The second smallest is a Dremel #107 1/8" high speed cutter
Here is a great video by Walt Cannoy showing how to make a nail rustication tool and rusticate a pipe.
https://www.youtube.com/watch?v=gyGCDBjrygA