Cupholder adapter for large water bottle

Large water bottles didn't fit in the cupholder on this recliner, so I made a simple adapter ring to accept larger bottles.

The inside diameter of the cup is 92mm, and the walls are 41mm tall. The bottom section that fits into the original cupholder is 81mm in diameter. I used hot glue to semi-permanently affix the adapter.

Printed upright with .4mm nozzle and .2mm layer height. I used supports, which left a bit of a rough surface on the underside of the top section, but I didn't mind because that part is hidden when installed and the extra surface roughness gives the glue more hold. Overture PETG. PLA would probably work fine as well.

STEP file included.