K8200 filament spool spindle

I wanted a filament spool spindle filler that I could fit on my K8200 without unscrewing the end screw and couldn't find anything on-line. Developed these hinged ones that you can use straight off the printer bed.

Have only just printed, but used 30% infill and 0.25mm layer height and they worked straight away and have quite a good stiff feel about them.

N.B. You just need a kitchen knife to wedge the jaws apart without too much force. Also, you will need to rotate the STL file by 180