I bought a polymaker nylon 750g roll and it is not as wide as a normal roll. I imagine it may be the same situation for you. I am printing a modified inner spool spacer to fit with the polymaker cardboard center with an extra “lip” to make up for the narrower roll. This way I can put it onto a standard Bambu spool
I measured mine to be about 15mm gap. Plan on printing the disc section as a sparse infill grid
