Ultimate Snap Fit Air Tool Cap

I've been frustrated by air tool caps that don't stay attached. I decided to solve that problem once and for all.

I fine tuned the fit of this cap using tried and true design methods along with a few prototypes to snap tightly but not so tight as to stress the plastic. They should last a long time.

Fits 1/4 NPT quick connect. Works great with PLA.

PLEASE post your makes! I'd love to see them out in the wild!

Feedback is appreciated!