Updated Yakima Corebar Endcap
Updated the endcap design to fit my thicker Yakima Corebar and added an additional no-supports-needed chamfer on the outer edge of the endcap. File is for the right-side endcap. Mirror it if you need the left-side.
I'm testing it with standard Cura settings. I might increase the surface thickness and infill if it doesn't hold up.