I made this support because I could not find an object that allows me to have the flash in the extension of the umbrella. With the remote control, my flash was too high.
Do not hesitate to make me returns and sorry for my English. :)
For the junction of the foot and body, it takes M8 x 30mm Male Thread 32mm Dia Star Head Screw Knob
And to block the umbrella, an O-ring 7x2 mm
any PLA, ABS & PETG