Knob for M8 bolt. (on pictures with bolt M8x80 mm)
Print with support only on the center hole on bottom piece.
For mounting the top piece, you will need:
2X Screw 3x10 mm - if you don't have the right length, just cut them to the size
2X Piece of 1.75mm filament - length: 5 mm (maybe little shorter)
The author marked this model as their own original creation.