Spool for 50-100g Filament Samples with normal Inner Diameter

This is a remix of a model I found on Thingiverse: https://www.thingiverse.com/thing:3324671

I needed a spool for sample size Filament (50g), that also fits on a spoolholder designed for normal size spools. The original's inner diameter was too small to fit on my rat rig. 

So I opened the STL in blender, cleaned it up a bit and scaled the hub up as much as possible without intersecting with outer geometry. Somewhat of a hack job but it worked.

Source file included as always.