Here was a request that came from weightweenies forum. It was a much more complicated model than I had originally thought it would be. Anyone who has worked with a printing service knows by now that there are a lot of restrictions on what can and can't be printed. In order to get this model to pass all the automated checks, it needed a few design modifications.

Here is what was requested, It was a GoPro style mount that had to be sturdy and mount in place of either side handlebar end plug. It needed to allow normal handlebar tape installation with the tape tucked into the bar end. It had to rotate and maintain the position without slipping. It must be as compact as possible. Here is what it looks like:
Handlebar End GoPro Mount - Home.jpg

Now to get this to function certain steps need to be done in a certain order. Here are the installation instructions:

1. Separate all parts by cutting the two scrap pins used to hold all three sections together during printing and polishing.
2. Insert an M3 x 8mm screw into the bottom of the GoPro section with the threads sticking up through the serrated surface.
   Handlebar End Rotatable GoPro Mount #1.jpg
3. Place an M8 nut into the recess inside the front hole of the plug base. Make sure it is seated into the recess provided.
   Handlebar End Rotatable GoPro Mount #2.jpg
4. Attach both sections together and slightly tighten the screw and nut together.
5. Insert an M6 x 45mm socket head cap screw into the front of the mount plug base.
   Handlebar End Rotatable GoPro Mount #3.jpg
6. Insert an M6 nut into the rear section of the expander plug.
   Handlebar End Rotatable GoPro Mount #4.jpg
7. Screw the sections together leaving them slightly loose to facilitate fitting into the handlebar end.
8. Insert into handlebar end and adjust the angle until satisfied, then tighten the M6 screw.
9. Adjust the rotational angle of the GoPro section, then tighten the M3 screw.
10. Attach your GoPro style camera per their instructions.

Since the GoPro section rotates this could easily also work on a flat bar road bike or mountain bike bar end. It could also see use as a headlight mount in certain circumstances with a smaller style of GoPro mount compatible headlights. Limitations on printer resolution do not allow for smaller than 5° rotational increments.

Link.