It would be cheaper and less cluttered to have a system with only one port, and moving it to each machine in turn, but I m too lazy to consider that. At least I do use face masks, which I liberate from the hospital, to control the amount of dust I inhale. Some of these have built-in plastic eye shields as well, which I like a lot, but they are only strong enough to block dust, not flying debris. Firm plastic eyeglasses or goggles are better. For the woodworker who spends a lot of time in the dust, especially with tropical woods whose dust may also be toxic, commercial systems of varying complexity for dust, noise, and eye protection are available.
Ear protection is also important.
After many years in a noisy shop, my friends are tired of repeating every second sentence to me, and I may not be far from a hearing aid. I no longer take two steps toward a power tool without my earmuffs. My only ventilation is a fan. There is plenty of heat, right next to the boiler room, but I really need an air conditioner. I lined about a quarter of the room s perimeter with open steel shelving.