UM2 Aluminum Extrusion Cable Chain Keeper

I needed a way to keep the end of the cable chain from sliding around. This may not be the most elegant solution, but it works well and it's small. I printed it in white so you can see it clearly. I will be re-printing it in black.

I used an M3x8 socket cap screw and a post assembly nut. **Please make sure you have enough links in your chain before securing this to the frame.** Another idea would be a small part that can slide back and forth along the extrusion as the cable chain moves.