simple print in place crank

I created a simple print in place crank. It's designed for a 4 mm thick screw.
In my case I use this for a small cable drum.

With a small spray of silicone spray the crank turns unstoppably.
Of course, the crank can also be scaled up to accommodate other objects.
It is even possible to print the crank without support. The small spaghetti formation in the screw hole is negligible.

 

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