This is a hyper-pla tight-fitting spool core created to allowing smoother rolling for authentic Creality filament on card board rolls. It was created for an Ender 3 V3 KE. Modifiable by being available in stl and 3mf.
Ender 3 V3 KE
print time: 1h10m, filament length: 9.24m, filament weight 27.57g, Cost: 0.83
layer height: .36mm, 20% sparse infill, Hyper-PLA material
20% tree support(still very easy removal), outer and inner brim which still leaves a good finish.
Easy to insert in roll with a tight fit, extends on both sides of roll while leaving room on the spindle.