Coconut de-husking tool - GIF

Coconut de-husking tool.

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Previously:

https://www.homemadetools.net/forum/...742#post148052
https://www.homemadetools.net/forum/...574#post132605
https://www.homemadetools.net/forum/...890#post119615
https://www.homemadetools.net/forum/...563#post182157

I want to know what the guys in the background did to deserve hand scrubbing the gutter? Judging by the fatigues and the stripes on the arm of the guy in the back, an army base somewhere where they develop coconut related tools?