Simple tape dispenser core

Replacement centre core for tape dispensers (standard 3M-style). Created because a number of these at my school had gone missing and it is such a waste to buy new dispensers every time this happens!

Of course, after I designed this, I then thought to look on Thingiverse, where there are several already, but I'd make my own by that point!

This is a very simple design, which can be printed in about 15 minutes, with miminal supports (only for the spindles) and no raft or brim needed, so minimal waste. There are no cut-outs, but it can be printed with minimal infill (the prototype is 15%, but I'm sure it can be done with way less, as it does not come under much stress).

I hope this is of use to somebody!