The 3D printing bed on this machine utilizes vacuum pressure to securely hold the build sheet in place during the printing process. This ensures that the print remains stable and produces accurate results. The bed's subassembly is able to reach maximum temperatures of 100 degrees Celsius, making it capable of handling a wide range of materials. This versatility allows for a greater range of printing possibilities, including the use of high temperature materials such as polycarbonate. The vacuum pressure and high temperature capabilities of this 3D printing bed make it a reliable and efficient choice for any 3D printing project.