took a look at a bunch of small brakes, problem was i wanted it to be able to bend thicker metal without buying a 1000lb 6ft long bohemouth so i played with some idea's in my head and this is what i came up with

here is the hinge detail there 3/8" thick flat bar the bolts are there to jig the assembly for welding they were later drilled to 1/2" and replaced with drill rod. they are also upside down,

here are the hinges situated on the base which is a hunk of 6" x 2" channel about 2" long.