I'm working on installing my duct collection system. I have a 2
horsepower, 1500cfm system. My shop is relatively small. I plan to
have about 7 ports. This is a hobbyists shop (i.e. 13in planer,
contractor tablesaw, 14 in bandsaw, etc.).
Everything I'm reading suggests that it is important to go with 5"
ducting all around. I already own a bit of 4" ducting, and well,
quite frankkly, it'll just be easier and cheeper to stick with 4". I
realize that my dust collector will easily handle 5" ducting without
loosing air speed, but is it necessary? Are those with 4" systems
satisfied that it's doing an adequate job?