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Metalworking (rec.crafts.metalworking) Discuss various aspects of working with metal, such as machining, welding, metal joining, screwing, casting, hardening/tempering, blacksmithing/forging, spinning and hammer work, sheet metal work. |
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seal seems in metal plenum
I'm building my latest contraption. Its a large metal plenum for directing
the air from an air blast sprayer down onto three rows of strawberries. Think of an air duct for heating with three registers, only use a forty horse power fan and very small openings. I made the whole plenum out of sheets of 1/8" steel, and 1/8" round tubing of different sizes. Its all tack welded together now. I'm going to finish welding for strength this afternoon. I'll stitch weld with a three inch or so gap between every one inch of weld. I'll have yards and yard of places where the metal meets that I need to seal. It needs to hold up to vibration and high air pressure. And be paintable. What would you use? Karl |
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