Lungs are one thing, but a whole shop is another.
The more I use my shop the more I have saw dust forming drifts in, on, and around the varous machines,
and piling up in the corners. Now that I have a shop that's actually a nice place to spend time in I wanted a way to keep that space as tidy as the aforementioned lungs.
Enter my home-made dust removal system.
I checked out Rockler and Delta and all the other tool houses and saw their fine dust collectors. The common features are a fan motor anywhere between one half and two horse power, a 1 micron filtration bag which separates the dust and sends the filtered air back into the working environment, a collection bag which collects the dust, and a frame, usually on casters, upon which the whole thing is mounted.
I read all of the reviews for the various systems which commented on the health hazards of the dust, the filtration abilities of the various filter bags, the effectiveness of each type of fan motor in moving volumes of air, and the noise generated by the fan motor. Just as there is a wide range of quality in dust collection, there is a wide range in price. I concluded that the system I needed in my shop would probably be too loud to suit me and certainly too expensive for a man of means as modest as mine. But I am a handy guy...
From the online site of Penn State Industries I priced a very affordable, highly rated, and powerful one and a half horsepower fan motor as the heart of my home made system. My idea was to design a system in which the fan motor was actually housed outside of the shop thus eliminating most of the noise as well as the entire need for filtration, and those filtration bags alone represent about a third of the cost of a conventional dust collector. With the fan outside of the garage all I had to do was construct the ductwork and blastgates as well as a small ventilated and wired structure on the exterior back wall for the fan motor, connect all the machinery with hoses to the duct and I'd be all set. And it would be perfect.
And that's just about exactly how it went.