Scent/Oil Diffuser holder for 22mm felt discs

This is a 2-part holder for standard 22mm felt discs used to diffuse scents from essential oils.  I specifically made this so I could set one or two of these discs in my car's cupholder and not risk getting sticky essential oils everywhere.

The parts are designed with a slight relief angle to allow the parts to interlock snugly but not tightly.  To separate them, just push down on the spiral part, and it will act as a spring to release the 2 halves.  I designed the base to have a little free space around the felt disc, in case the ones you get are from a cheap manufacturer that got the size slightly wrong.

For examples of the standard 22mm discs I used, check here: https://www.amazon.com/s?k=scent+discs+felt&ref=nb_sb_noss_2

STEP files included due to the small details on the parts.  I recommend printing the STEP files, but if you really want to use STL for some reason, I have included the assembly in one file, and a split and separated version.