I wanted a 2nd hose running down to my machine to clean up with after cutting. I also decided it would be nice to run a couple of lines to other parts of my little basement shop. My 14 gallon Ridge vac has no problem with pulling enough air thanks to a big aftermarket hvac filter and dust deputy to keep it clean. Some day I will have a real shop with real dust collection. For now this works great.
Blast gates worked great and I remixed so I could do fittings for everything.