Rope Spool

50' rope spool

I have uploaded an alternate version (v2) that moves the hole where the rope starts to the bottom instead of the center to make it easier to coil the rope around the spool. 

OnShape 3D model link:

https://cad.onshape.com/documents/bcb3fd0a4661b8e9bfde2107/w/01158f02ebfc6e678ccde6aa/e/23829ed03e6e1b765d60235a