Updated, Bolt-2 difficult to break. By attaching a damper to the lower ground plane of 3D printer you can halve printing noise and vibration. By placing tennis balls, soft baseballs, etc. on the damper and the floor surface, stabilizing the installation of the 3D printer and suppressing the noise generated around it. The figure below is after installation on the ALUNAR - M508, the noise can be reduced to about half. DEMO: https://www.youtube.com/watch?v=ac0__hhIWas https://www.youtube.com/watch?v=OPDsMhkbRDA