A low profile bracket to put ontop of a 30.5 mm stack so you can put a caddx turtle v2 or runcam split mini board on top at 45 degrees. enough clearance for connectors on the bottom of the board, and space underneath to fit a micro receiver.
30.5x30.5 are big enough for screws to go through, and put a nut on top. 20x20 are tight enough that you can thread m2 screws down through the board and into them
Print in abs/pla or similar.