This is used to hold two parts ,one with a hole where a hinge goes through, connected to the other part, once the distance of the game is regulated, the end part melts creating a headball that stops the movement. The eventual game that is obtained will make the rotation and the lateral movement of the connection delicate and right for small movements.

The use of mixed techniques depends on the type of object and on the effect-design that one wants: the meccanic resistance of the system needs to be helped so it can be used for a protracted time, since the repairings in these cases aren't easy to do.