Filament spool roller

Ever had issues with the filament spool not wanting to rotate? Or from time-to-time, hearing a thud, coming from the spool holder?

If you have a simple acrillic spool holder like I do, you might as well have encountered similar issues. Problem in many of those cases is that the diameter of the spool holder axis is smaller than that of the standard filament spools. The advantage of that design is that you can use smaller spools for the same spool holder. The disadvantage is that if the filamen