how to configure an air hose extension to blow shop dust off rafters
My shop (hobby woodworking) has 10" x 8" beams across the top of the shop up with their underside about 16' from the floor and a structure of 4 triangles of these same sized beams on top of these cross-beams extending up to the topmost apex of the ceiling which is about 24' up. These beam upper surfaces, the light fixtures hanging down to 16' from the floor and two ceiling fans hanging down to about 15.5' from the floor all collect dust from my woodworking, even though I have an air filtration system (box) hanging up there from one of the beams, and I also use a Festool cleantec vacuum with an oneida air systems sawdust collection box on top of it, with an oneida dust deputy on top of the box, that all works pretty well at machine and floor level. But dust from the woodworking still collects up there on the beams, light fixtures and fan blades.
Rather than using a ladder to climb up there intermittently to dust all these off, I am thinking about fabricating some sort of aluminum or steel tube (I don't think PVC will be strong and inflexible enough) the same diameter as my air compressor hose (looks like about 3/8" ID on one hose an 1/2" ID on the there). I occasionally use my air compressor (small, portable) with the hose, and a quick-connector triggered nozzle (from Lowe's) to blow-clean dust from the floor and lower parts of the shop, but would like a long tube extension with a 90 degree nozzle on the end of it to reach these high beams, lights and fans, and with a trigger to activate the nozzle located on my end of the tube so I can control (on and off) blowing off the dust up there. I would rely on the air filtration system up there to remove much of the dust blown into the air and the vacuum to clean the remainder when it settles to floor and lower parts. Also, as always, I would wear a breathing mask.
Any ideas on how I should fabricate this tube/nozzle? I think metal fabrication will be required, and that's OK.
All thoughts are welcome!