If you want the core to be paper (like real prusament spools) you will need:
Paper tube with inner diameter 24,6mm
(this tube is usualy used to hold plastic bags and can be found in most grocery stores)
To make the core, use cutting guide to make it exact lengt and straight
If you dont have the tube you can print it
Naming indicates how large te cutoutt is
(Core_4mm.stl has 4mm * 7mm cutout, Core_2mm.stl has 2mm*7mm cutout etc.)
for paracord use 2mm cutout
If you like this and would like to support me (For Free), dont just like this model, but also download the files :D It helps me out a ton
The author marked this model as their own original creation.