I currently have a 1 HP dust collector set up for my tools with 4-inch dust ports, and I also use a shop vac specifically for smaller tools like my miter saw and sanders with a Centec 1 1/4 hose system. To save some space in my shop, I'm considering dropping the shop vac and hooking up the Centec hose from a splitter on the dust collector instead. Is this a good idea, or will it not work out? Has anyone tried this before?
4 Answers
For sanding specifically, it could work with some tweaks. I made a custom adapter that connects a 2.5-inch hose to my sander with some openings at the bottom to prevent choking and help catch dust. It isn’t perfect for dust-free indoor sanding, but it works well enough to keep the surface clean while I work.
A better solution is to get a proper dust extractor designed for things like drywall and grinders. The Festool systainer is a great choice, and there are others like the Metabo A35 that do a fantastic job. They handle dust, and the filters don't clog as easily as regular shop vacs. An investment in one of these would really pay off if you're serious about dust control in your shop.
Honestly, I wouldn't recommend it. Dust collectors aren't just big vacuums; they have different systems at play. They work best with larger hoses, while a shop vac is designed for smaller ones. If you're using tools with 2.5-inch or smaller ports, a shop vac is still your best bet.
Most dust collection systems just can't generate enough static pressure for smaller tools like routers or sanders with 1-2 inch ports. They thrive on those big pipes for tools with 4-inch ports. If you want to collect dust from smaller tools efficiently, a dust extractor or shop vac is a must. The Oneida Supercell is a fantastic but pricey option if you need versatile suction.

Exactly! Think of a dust collector like a fan and a shop vac like a compressor. You wouldn't use a fan to blow up a tire, right? It’s similar here.