Nice Ed. I have seen something similar. They are called punch pliers. We encourage people to learn to punch their own cartos eventually. It makes it where you can get the proper flow for your specific juice/carto combination.
Nice find
Nice find
Understand and figured it would be next to impossible to get a window there and make it functional.
Speaking of jigs and such, I was forwarded a link to a thread that could be beneficial in regards to punching cartos.
Now I haven't tried anything yet so I do not know if it works well, how easy it is to use, etc. etc. but it sure is an interesting yet simple\brilliant idea:
http://www.e-cigarette-forum.com/forum/general-e-smoking-discussion/226475-thank-me-later.html
Just figured I would pass on any helpful\interesting ideas regarding punching cartos and once I get one I'll let everyone know my experience.