This silent mod is for EVERY 3d printer with Nema17 motors.
The silicone parts reduce the noise in a so drastic matter, the loudes part on the printer is the cooling fan for the hotend now.
It is important that the Nema17 motors and the bolt to hold them have no direct contact to the frame. For this purpose the silicone washers are very important.
The part order is:
bolt - metal washer - silicone washer - frame - silicone plate for Nema17- Nema17 motor
For additoinal vibration reduction i have added a mold for the rubber feet.