//Update: due to some comments, I made a second version with a bigger inner diameter (..._bigger_diameter.stl) , also you can now use my Inventor file to change it to your needs yourself //

This will run the Hatchbox filament spools on the Creality Cr10 Spoolholder beautifully.

Instructions: just print out two of them , the tolerance should work just fine without post-processing.
If you want to make shure it does fit to your printer without wasting too much filament, try to just print the upper part of it by cutting the lower part in your slicer.

If you have a similar printer the measurement of my spoolholder is 30,4mm in diameter.