Any of you guys using an air filter in your shop? What brand, size, etc? I need something to clean up the air in my garage/shop. I of course wear a filter mask when working but sometimes when I'm just sitting down drawing out a design there is still dust floating around the room. I guess that can't be avoided completely but I was hoping an air filter would help. I also plan on buying a real dust collection system soon. My shop vac is not working too well.