i designed this hub system for use in making a geodesic dome model.
it is a print in place hinge.

you would use a screw to go through the holes in the hinge to secure the hinge to the wood strut.

you would use 3 of theses hinges to make a truncated geodesic dome,
5 to make a pentagon, and 6 to make a hexagon.

print as shown in the supplied stl and gcode, with hinge sections at 90 degree angle.

supports are recommended but may not be needed.