I have a Delta 12/14 cabinet saw that I finally moving into the shop. Think a slightly larger Unisaw. Plan is one dust hose to the base cabinet and eventually a smaller hose to the blade guard. The blade guard hose will probably be at least two years into the future and a new house. My 2Hp cyclone has a 5" inlet which I run a 6" main trunk off of.
So should the hole in the base be 4" or 6"? I figure 6" for now and it can be necked down to 4" when the upper hose ends up being attached. It is much easier to reduce a hole that size in the heavy base metal then to enlarge it if needed.
i plan the upper hose to be 2-3" hanging from the ceiling.
Bil lD.