Parametric Enclosed Stackable Spool Holder

Update 5/5/18: I am satisfied enough with the design and the fit that I consider this to be finished, which isn't to say I won't keep it updated if there are errors found or someone has a good suggestion.
Update 5/9/18: I have recently designed another style of enclosed spool holder that doesn't use a central spool core - https://www.thingiverse.com/thing:2900930

While inspired by the Spannerhands spool system, I wanted something a little different so I designed my own enclosed spool holder system.

I designed this to be parametric and stackable/interlocking, usable in either a horizontal or vertical orientation, for which I designed the spool core with a lip on one side to assist with horizontal usability. And, there is a spot to stick your desiccant packets.

Parts:
Base and Lid - sized for 200 mm x 70 mm spool (customizable in .f3d file)
Spool Core - sized for 54 mm inside spool diameter (customizable in .f3d file)
TPU Seal - (size will auto update if customized)
Spool R