Butterfly Scissors Protector (with Lock)

This is a protector for general butterfly scissors. The protector is designed with a lock, this can help to avoid the scissors drops out of the protector. User needs to press the "circle" to unlock and pull the scissors out of the protector.

The protector includes two STL files. One is upper side with the locking mechanism while the other one is the lower side. Two parts are needed to glue together to make it works.