>Do you know if I have to have the suction running all the time from the shop-vac hooked to the dust port?
You need to run the vac at all times. You're adding a lot of air to the cabinet with the gun. If you don't use the vac you tend to build up pressure & force blast media & dirt out around the door seals. This will make a mess in the shop & you don't want to be breathing all the dust anyway.
Dean Vandergriff
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