Milk Bottle Locking Cap "Milkey"

Picture the scene... you arrive at work and, while your PC is booting up, decide to make yourself a nice cup of tea. So you wander to the kitchen, and open the fridge, only to discover that someone has used all your milk again - oh no! With a look of despondency, you return to your office, and resolve to find a solution to this problem...

This is a locking milk bottle cap, which requires a removable "key" to be able to open. The idea is that the cap rotates freely without the key, making it difficult to open the bottle. When the key is inserted, the cap locks and can be removed or refitted easily.

Now your milk is a little bit safer in the communal fridge at work...

For food safety, this is designed to accept a standard milk bottle cap which needs to be glued into the 3D printed cap after assembly.

Other parts required:
* 1x countersunk screw M3x10 (to secure the central hub)
* 2x metal shafts 3x18mm (these form the pins in the "key")

Drill through part 3 with a 3mm