Of course it will cut a hole in a plastic bottle. It just won't do it as well as the regular 21. In fact, I submit that the Insingo can do NOTHING better than the regular 21, except that it may have a SLIGHT advantage with food prep.
Point me to another thread, take a picture or argue otherwise. I think I'm right. But I want one (because I think they look sweet!) so bad that I need to be convinced. It just seems like everyday I'm running into situations where I think to myself, "I wonder if the Insingo would have done as good of a job as the regular 21.
Has anyone ever switches BACK to the regular from the Insingo?
And for the record, the plastic was excellent.