When I couldn't find a simple bolt-on bottle holder for a half-liter bottled water, decided to draw my own. It's designed for a 65mm diameter bottle with enough pressure to keep the bottle from jumping out. It should have enough tension to accommodate slightly smaller or larger bottles.
This was printed on an Anycubic Photon Mono 4K with Chitu Conjure Rigid resin. It hasn't been extensively tested yet. A tougher, more flexible resin might be needed if this proves too brittle, but there's a lot of flex and redundancy in the design.
It's designed to fit a 64-74mm M5 bolt pattern with normal M5 cap screw clearance.
bottle_cage.stl | 1.5MB |