We print on 30in materials all the time on a Roland vg2-540. The media take-up doesn't work great so we extended the end cap to better accommodate shorter materials. Slips right over. The first time or two inserting may be tight, but it was designed to be removed.
This replaces the part connected to the motorized shaft. Slips right over. The first time or two it may go on tight but in time it will come off easily.
The author marked this model as their own original creation.