The Centroform EZFORM LV 1827 110V Tabletop Vacuum Forming Machine has an opening to attach your vacuum source and an additional outlet to add an electric pump, if needed. A Shop vac or similar vacuum removes a lot of air quickly but it does not have a lot of torque. A pressure sensitive valve closes automatically when the vacuum is no longer able to suction and what is left can be evacuated by an electric pump, if needed. All stainless steel welded construction.
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