I took a small piece of 6061-T6 about 3/16 square and tried to bend it.

How do you bend something that's 3/16ths of an inch square? How do
you hold something like taht? Or did I miss something?

It was 3/16 square and a couple inchs long. I made a simple bender
by putting a V block on my arbor press an putting a wedge on the ram.
Works surprising well for many things. I can also put the wedge and
V block in my kurt vise and bend things that way. Same results

chuck