Summary

This is a simple desk spool holder. Print the two parts and put the hole of the top one, over the pin of the base. During printing the spool stay in place on my desk, but if you want to improve the friction just put rubber sheet on the base. I suggest to use a teflon cable to drive the filament from the spool to the extruder.
If you need different diameter to fit in you spool, just comment here!