Simple weighted box with cement* that screws in one or two 300mm M8/M8 gooseneck* with a clothespin* on the end.

Assembly:

• Print the box and lid
• Fill box with cement (or other heavy stuff)
• Close lid with countersunk M3x5 screw*
• Thread in M8 gooseneck, box should have rough printed threads for this. Mild coercion with pliers may still be required.
• Thread clip onto other end of gooseneck and use bolt/nut to attach eg clothespin.

Using is easy, slightly tilt the box away from the board, guide gooseneck with probe to correct position, release tilt and there should remain tension in the gooseneck.

*not included