Here's the roll holder I made a few years ago. The roll sat on top of the two rollers, with the paper leader feeding under the front one facing the cut vinyl sheet, or your pallet in the case we're speaking of. Clamp the bottom to a table. The two metal uprights were to keep the roll of paper from wanting to veer off one way or the other. As I mentioned before, the roller ends for the PVC came from McMaste-Carr. I think the pipe was 2". Made applying the transfer paper for cut sign vinyl easier to manage for one person.