Listed as remix, I used the pins and clip from the Phoenix hand.
Update #1 bottom brace was tight due to swelling of PLA I would resize to +0.1 mm Update #2 everything works with a bit of shaving, this may be nicer @ 25% bigger, things are a bit tight on the sliding pins.
Last Update - I added a center section for 4 pins on each side, If you have problems printing with supports. Just print 2 of the bottoms, one for the bottom and one for the top. Also add a washer to the outside side knobs (same as the one inside box) this was missed in the STL. 125% works great! more pics on the way.