Background
Some crazy/retarded students love to play with the gas tap outlet in class. Flipping the switch is relatively minor (you can keep the master switch close), but they may tuck rubber fragments and sticky tape inside the outlet, causing either complete blockage or strange flame color, hence requiring repair by gas company.
This is a cover and a brim that interlock and screwed together. Students are unlikely to be able to touch the outlet hole or switch without a hex key or breaking the item by brute force.
Additional Materials
Print material
Print Setting
No particular requirement but I would add modifiers to make 100% infill just around the nut slot and the screw head hole for better durability.
Other Notes
The author marked this model as their own original creation.