Masterspool

The 3MF files include modifiers to ensure rigidity when deleting the top and bottom layers and to be able to still add filamet info stickers. Works well with DasFilament, Fiberology, 3djake and other refills conforming to the Masterspool standard. 
 

Does not work with Sunlu and eSun refills.

1. No logo (They probably don't want me to put their logo on a model they didn't make)
2. No scale (I was too lazy to do the calculations for length and the original goes with weight which changes with material)
3. Three larger nubs instead of one to ensure that the cutouts on both sides align
4. The arrows indicating the unwinding direction are now on the shaft to prevent them being visible when printing without top and bottom layers or on an almost empty roll
5. Some minor changes like fillets and stuff