OSR2 adapter for Manfrotto flexarm

This is an adapter to connect an OSR2 to a Manfrotto flexarm. Uses the standard four inner holes on the base of the OSR2.

I printed it in PLA with 100% infill. Can probably do lower infill if you add extra shells to the walls. Requires a 1/4-20 nut that you can insert after printing. (It inserts from the bottom and the Manfrotto will screw into it.)