Determine the materials that will be used to construct the vacuum chamber, piping, and seals. You will also need to obtain hardware that allows you to connect all of the appropriate pieces. It is important to remember that the seals made within the vacuum system must be air tight.
Construct the vacuum camber and ensure that a high-pressure manifold is attached to the chamber so that excess air pressure can be released, if necessary.
Connect the vacuum chamber to the high-pressure vacuum valve, roughing valve, and chamber vent. The chamber vent should precede the high pressure vacuum valve.
Determine how you will induce air into the vacuum system. For the sake of this demonstration, liquid nitrogen will be used, placed inside a cold trap, to induce the vacuum effect.
Connect the cold trap to the high pressure valve that sits after the chamber vent and roughing valve.
Connect a diffusion pump to the bottom of the cold trap. Between the diffusion bump and cold trap, you will need to install a baffle where air coming out of the chamber will route through.
Connect a three-way air valve to the diffusion pump and roughing line, routing the third part of the valve to the air pump and its vent. The air pump is what will be used to pull air out of the vacuum chamber and reduce the pressure inside the vacuum system.