This is a key for bypassing the security lock of the bar feeder and allow you to use it with the cage open. You need two keys because there is a lock on each side. Is useful for doing troubleshooting on your machine and check why that damn big and expensive motherfucker doesn't work.
Don't let the security key in place for daily production, always alert your coworker if the bar feeder is running with this thing (and u know that shouldn't never happens, right?) and - for God's Sake - don't put your hand or dick inside the machine when is running with a safety's bypass! That machine can kill u in a slow and painful way.
Don't print this thing, your boss will fire you if he catchs you with this thing. Let the maintenance guys doing their fucking job.
PLA works fine, but I recommend to print it with a more strong filament like PTEG or a semi-flex filament like an hard TPU (85/95A).
Why do it if a security key printed in PLA works just fine? Well, is a little awkward to explain to your maintenance guy why you have a security key in first place, and why you just broke it in the security lock :D
Yes, my printed part is horrible.
The author hasn't provided the model origin yet.