Improved ball-joint wingnut for Anker car phone charger

My wife has an Anker PowerWave 7.5 Wireless Car Charger. It has a ball-and-socket swivel joint with a wingnut to tighten it.

The original wingnut split, rendering the phone mount useless. Rather than buy a new wireless charger / phone mount for the car, I designed and printed an improved wingnut.

This design has three improvements over the original: the wings have a steeper slope to allow the ball joint to swivel farther, the body of the nut is thicker to resist splitting, and one can have more than two wings. I settled on three (this is easy to change in the .scad file included).

Customizing

The included carchargernut.scad file can be used to customize this design. It requires my thread library circlestack_thread3.scad, which I developed for my nuts&bolt baby dexterity toy. The library can be downloaded from there. It isn't the most efficient thread library (I created it as a proof-of-concept) but I had it available and it works well, so I used it.