Step 4: Fabrication of the parts: Spine and one Rib
From the second piece of 1/2" EMT (10' long)
*Cut a piece 59" long, which will be the spine. Cut a piece 38 1/2" long, which will be one of the two ribs.
*Mark the spine at 6 1/2" from each end.
*Bend from each end to create a wide "U" shape, as shown.
*Mark the rib at 5 3/4" from each end.
*Bend from each end to make another "U" shape, as shown.
*Cut a piece 59" long, which will be the spine. Cut a piece 38 1/2" long, which will be one of the two ribs.
*Mark the spine at 6 1/2" from each end.
*Bend from each end to create a wide "U" shape, as shown.
*Mark the rib at 5 3/4" from each end.
*Bend from each end to make another "U" shape, as shown.
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