Thought this might be more germane to warmwater flies, and most of you are probably already well aware of this, but Harbor Freight now sells a 6 piece hollow punch set with ?? hex drive to fit your drill.
Hex shanks for secure, non-slip fit in any chuck
Sizes: 3/16", 1/4", 5/16", 3/8", 7/16", 1/2"
Overall length: 2-3/4"
Thanks for the info. I bet I can get my friend Kaboom1 to pick up a set for me at the Lima, OH store. Great for making your own Poppers or Jelly beans out of Flip Flops.
Good for 2 - 3 mm foam for making these as well.
Turn the foam discs around and make a popper instead of a “slider”. Of course most if not all of you know this already. 
