This machine can be used for vacuum casting or investing (the elimination of bubbles from investment). The machine, with a vacuum pump, is capable of creating negative pressure equal to 27 to 29 inches of mercury at sea level. The built-in vacuum gauge indicates the vacuum in inches of mercury.
The vacuum table measures 10" x 10" and rest on jiggle springs.
The set includes a vacuum table, Plexiglas bell jar (8" x 7.5"), a rubber pad for investing, a silicon pad for casting, pump oil and tubing.