Cup Holder for Mahindra 2538 Tractor

I recently bought a new Mahindra 2538 tractor. It did not come with a cup holder, so I decided to design one. It consists of two parts, a mount that bolts to two existing holes in the right fender, and the cup holder, which mounts on the adapter.

The adapter is designed to use 5/16 bolts. I had to modify the cup holder to provide clearance for one of the bolts (I routed out a hole in the bottom of the cup holder). If you use a 5/16 machine screw instead of a hex bolt, you might be able to avoid this. It would be possible to modify either the adapter or the cup holder to provide the needed clearance, but I don't have time at the moment.

I recommend using a cup with a top that seals completely. The Ozark Trail cup shown has an drinking hole that can't be sealed, and sloshes and sprays liquid everywhere because of the tractor's bouncing.

I printed this in PETG. I just mounted it yesterday, so it remains to be seen how durable it will be.

I could not find anything similar to this for my tractor. I'd love to hear if others find this useful.