https://www.youtube.com/watch?v=qjI5...nel=StumpyNubs
Stumpy offers a lot of tips regarding dust collection in a 17 minute monologue. He is very well spoken and it good watch for those of you contemplating where to go with your dust collection improvements. It is sponsored by ClearView, but only at the end is that obvious. I don't agree with everything he says, but in general he does a good job. He clearly is a PVC duct fan and discounts HVAC steel duct which many of us have found works very well and offers 5" and 7" sizes, IMO helpful in properly sizing ducts for most 2-3 hp systems.