Summary

I created this spacer ring for my awesome 3" tape dispenser by tetralite, as I use it to hold multiple smaller width tapes.. and this keeps them from constantly moving together (which makes pulling the tape off a pain.)..
It is 14mm wide, but you can obviously stretch it in the Z direction in your slicer program to make it as narrow or wide as you want (see image) to fit your selection of tapes..