This is a further development of my previous submitted cable connector (thing:4709435).

I designed fully parametrized USB Cable Protector using Fusion360. There are two versions for you to adapt to your connectors:

USBRoundedCorners.f3d: Use this file for USB connectors with rounded corners such as USB A (see images) or B.

USBHalfCircle.f3d: Use this file for USB connectors, where the width of the connector describes a half circle such as USB C (see images) and Apple Lightening.

I printed a USB A and USB C protectors using the enclosed stl files.

I used FLEX TPU98A for printing the connectors. Two comments: + FLEX is often printed with the print fan turned off. In my experience, self cooling is not enough and I had to turn on the fan to 30% after the first few layers. + Bridging with FLEX is difficult. So I made sure, that junction/transition from the connector to the cable enforcer has an angle of 45°.

If you would like to use other materials (PLA, PETG) you should carefully check the parameters; e.g. the slit for pulling the cable through is smaller then the cable diameter, which isn't a problem for FLEX material, but may be for others.

Of course you may use these files for any other connectors than USB, which look similar to USB's.