The
chassis (grabcad) is made out of 2x1-1/2" square tubing with 1/8" thick walls that has weight savings to allow for maximum rigidity while cutting the most amount of weight out of the tube. With all of the hardware on the chassis, it should weigh around 23-28 lbs. The gussets are made of 3/16" thick plate that will keep the chassis square. The sheet metal siding is made of .009 in. thick metal that is bent to make it stay straight.
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