A simple key that opens enclosures secured by a type of hex tamper-proof socket with a hollow middle. In my case, it opens the box where my ISP's fiber optic line terminates outside my house.
Make sure to print the “handle” side down.
Printed on a Prusa Mini in Monoprice PLA+ (hence the stringing…), 0.6 nozzle with the 0.15mm structural profile. Took about 10 minutes start to finish.
Note: the photos are of the first iteration. I have made 2 improvements:
Fusion360 model file is provided for your adjustment needs!
The author marked this model as their own original creation.