Thinking of putting a T on the air discharge of the cyclone, and sending the air outside, using a blast gate to change to the filter. Do I need more than one blast gate, thinking if I put the gate on the exterior dump, the resistance from the filter will push the air outside. Then just close the blast gate to use the filter to return the air to the shop. Was considering building my own air dump on the exterior, There is a 2' overhang on my soffit, and if I just close it up to the top, there should be no moisture introduced to the vent. Was going to use wood to make the dump, as I am a woodworker. Any comments?