Anet A2 - X Axis Cable Chain Holder

I designed this to add a cable chain to the Anet A2's X axis.

This holder is composed by two parts:
* One part connects to the X carriage acrylic part. Just take one of the back screws and screw this holder in. I needed to replace the screw for a longer one for this to work.
* The other part is fixed into the 2020 aluminium extrusion and is fixed.

I used a 20x10 cable chain I found on [eBay.](https://www.ebay.co.uk/itm/10-x-20mm-1M-Open-On-Both-Side-Plastic-Towline-Cable-Drag-Chain-BT/28