Bogen 3020/3021 Tripod Center Column Adjustment Knob

thingiverse

This is the larger knob that allows one to change the height of a Bogen/Manfrotto 3020 or similar tripod. I tested this on my tripod and it worked alright, but I'd have concerns about using this design as-is in the long term. I designed the knob to be fully printable, but it would be a much stronger design to replace the hex shaft with metal, as on the original plastic knob.