WalkingPad X21 Bottleholder

I recently bought a WalkingPad X21 treadmill which is a great product, but the minimalistic design lacks a good place to put a water bottle. I made this attachment to fit on the side of the handrail so it doesn't interfere with the LCD displays on top and can stay on when the treadmill is folded for storage.

It consists of 3 parts in 2 prints.The first is a 2-part sleeve that slips on the side of the handrail. It includes a little bit of the curvature which keeps it from slipping down. On the front each piece has half of a dovetail. The cupholder slots onto the dovetail and locks the sleeve in place. The cupholder has an inner diameter of 80mm, which fits my 0.8L sports bottle.

This is my first printable designed from scratch so it is a bit overengineered and not optimized at all. With my Ender 5 the final print fits snugly, but fit might depend on tolerances on your printer and if the treadmills have the same dimension on the handrails as mine.