This is the customized weapon pulley system I designed for the 1-pound "egg white mixer". The pulley is planned to be manufactured using 3D printing technology, while the weapon itself should be machined by CNC, but my parts have not been finished yet. The first pulley is equipped with a hole for fixing screws, so that it can be firmly installed on the motor; the second pulley is designed with a locking mechanism, which can easily achieve quick connection and disconnection with the weapon. With the help of 3D printing technology to make pulleys, we can not only efficiently