The single-ply filter supplied with your industrial vacuum can only filter particles larger than 10 microns. The large amount of sawdust you produce - and ALL the most dangerous for your lungs - is less. Hook up your camp vacuum to a table saw or grinder and it simply sprays FINE DUST into the air. Replace it with this one - it's a big difference for a relatively small cost. Also, do yourself a favor and buy bags for your shop vacuum cleaner. They cost $5 each and save you the mess and hassle of cleaning the filter frequently. Don't save a penny here. Do those two things and your vacuum will finally measure up to a German-made vacuum that costs many times more (I use both).