To make the leaf spring clamps, I needed to make a trip to the local hardware store, where I picked up four 3.5" x 5/16" Grade 8 bolts, four 5/16" nuts, eight 5/16" washers, and a 4' long piece of flat steel bar 3/16" thick and 1" wide. To make the spring clamps, I cut four 7" long pieces, found the center of each piece and made a line 1.25" to the left and right of the center (totaling 2.5" for the width of the leaf springs). I marked a spot 3/16" from each end of each of the 7" long pieces in the center, where I drilled 5/16" holes for the bolts. After drilling the holes, I made a 90* bend at the two lines that I marked 1.25" from the center of the pieces. After finishing this, I painted the clamps to prevent rust, and here is the finished product:
