The frame is all 1/16" wall, I added another 1 1/2" X 1 1/2" center piece so, the two 1x1's take the bolts & the center rail takes up the load as well. Has a top in place now, so it should be plenty strong. The machine weighs 250#, so each member will carry 83#, split 2 ways (functionally, load at each end) means each weld on the base will take 41.5# at the ends, or enough to take the load.
Will post back once it's in place & bolted down.
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