K&F Concept ball head clamping nut extension

Purpose

Extension for clamping nut on a K&F Concept ball head to enable tighter clamping when using heavy equipment.

When using the ball head with a Nikon Z7 and 70-200 f/2.8 lens, I was a little concerned about whether the clamp was thight enough. It was, but next time I want to thighten a little bit more,

Sizes

The nut extension was designed for a K&F Concept ballhead BH-28L but it may suit on other sizes of the ballhed too as long as the outsinde diameter of the clamping measures 18 mm.
Please leave a comment if using the model/part for another size of K&F ballheads.

If you need it for another size feel free to modify the provided FreeCAD file, but please publish it too - thanks.

Print

PETG recommended, weight ~ 3,8 grams

Nozzle 0.4 mm, Layer height 0.2 mm (0,3 mm will do it too), 2 Wall lines (at least), 3 top and bottom shell layers, infill 10 % (at least), no brim, no support.

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