This is version 2.0 of a previous model I made (https://www.thingiverse.com/thing:4795936). After using the previous model for a while, I found it had way too big of a footprint, I didn't like the magnets on the bottom, the clip cup was too narrow, and I never used the large clips.
I designed this version to address the issues with the previous model, yet keeping it easy to move between my cutting surface and my sewing machine.
No supports necessary to print. I found it useful to put some sound foam on the bottom of the cup to reduce noise when I'm putting clips back in.
There are 2 slots to insert 60x10x3mm magnets to hold the pins (I superglued these in to prevent them from falling out)
The author hasn't provided the model origin yet.