I designed this because other insert designs I was trying seemed to be too rigid - I would have to tweak the size slightly to make it fit in different brands of tape. This design offers a little flexibility to allow it to fit snugly in most if not all standard size tape rolls.

Printing:

Creality Ender 3 .2mm layer height 10% infill supports - yes - I used an angle of 80, but anything between about 40 and 80 should work

Uses about 3g of filament