As I recall, a few weeks after I bought this packing tape dispenser, I dropped it with the nut downward, whereupon all six of the little tabs that were supposed to hold the tape roll in place broke off, allowing the roll to walk off the holder. Having put up with that for far too long (I don’t do a lot of shipping these days), I finally drilled and tapped three 4-40 holes and ran a trio of setscrews against the inside of the roll core:
The holes are angled so that the setscrews bite into the core just enough to prevent it from walking away, but I can still pull the roll off when it’s empty.
That should last pretty nearly forever…
The Smell of Molten Projects in the Morning 