CO2 Cartridge / Capsule Stacking Tray

Each tray can hold upto 20 12g CO2 cartridge and has holes in the bottom where the neck of a bottom tray of cartridges fits into.

The 3mf file is setup for a 0,6mm hardened E3D nozzle using PLA. Check the print settings if you use something different. The file also contains a bottom infill modifier box to ensure the CO2 tips sit on solid plastic.
That's why the preview model looks a bit odd.

The zip file contains the Solid Edge 2023 (free community edition) source model.