re: Dust collector question

According to the product description on Amazon, it should get 696 cfm with a 4" hose. To maximize that, make sure you seal the the fan housing with silicone and all hose connections should be tight. If you make a separator, make sure it’s also sealed air tight. It’s not too powerful. You may not be able to pull large chips but it should work well for dust depending on the tool setup.

You can’t compare it to your shop vac, which can probably suck a bolt off the floor but moves very little air thanks in part to the narrow hose.