Cap for standard 12V "cigarette lighter" auxiliary cable
prusaprinters
Most 12V splitters on Amazon didn't come with caps. This should remedy that, and they'll even stay on the cable! Will keep water out, but I wouldn't call it waterproof. Print with something flexible like TPU. The strap needs to flex substantially to go around the connector. Suggest: 3 perimeters; 0.4 line width; 0.2 layer height; 4 tops&bottoms; 55% infill to get some nice substantial parts. Fit is snug.
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