PermaTrack Endcaps and Coupler

This is a remix of the endcaps by brianbarrell for RGB-Man and Dr. Zz's Permatrack.

The original ones had some inconsistent wall/gap sizing which made them somewhat fragile. I don't know if the PermaTrack is different now, but it seemed like the original endcaps were a little narrow, so I widened them a tad.

I also made the hole cutout more centered and sized to fit a 10mm or 3/8" grommet to assist with weatherproofing. This fit my 18/3 cable perfectly.

Lastly, I used the endcap's base design to make a coupler to join two pieces of PermaTrack together. It eliminates any gaps and makes it look cleaner in my opinion. There is another coupler piece on Thingiverse that didn't fit for me, but again, I think the Permatrack might be slightly different if purchased recently than what those were designed for.