Fair enough never used one myself.
Granted I have no experience punching cartos myself, personally a nail, hammer, and a small towel (to hold the carto) seems like the best alternative to me.
But then again right now I am in my *freak its getting close to x-mas, I need to save additional money, what the BLEEP am I going to get everyone* mode. So that may also have something to do with it. lol
