Updated design from Thingivers by Alexhart, Bleackburn Flea Bike Light Handlebar Mount - 22.2mm. Centers Flea Light over center of Stem with more sturdy connection to ring section. no need to weld fork to ring. Just snap the 2 pieces together, I added loctite to the negative half to ensure alignment for focus. Added more material to hinge piece original had weird hole in first prints that would have made it fail.
Print three pieces at the same to ensure negative spaces cool enough not to droop.
Used 1/16" brass rod for hinge pin, needs to be drilled out. Closure requires 1] 6/32 nut, 1] 6/32 3/4" Philips screw.
First attempt at any 3D print. Just found original on here then went to local maker space to get some advice. Played with the original design till I had something that worked.