This is a circle jig.
I needed several circles made out of round bar and don't have the "right" tools to make them so this is what I came up with after a few suggestions from members HERE.
I'm not sure if this will count towards the contest but it IS a custom made shop tool?!?!?!?

I used some left over Oak from a wood project. The center circle is 7" in diam. and the 1/4" dowels are drilled to allow the bent round bar to expand to the diameter I need and hold it in place to weld. I drilled holes in the bottom of the base to allow me to mount it to my welding table for bending. I added a piece of 3/4" square tubing in the center 7" circle to insert a 90* bend of the rod to hold it in place while bending. I didn't want to just drill a hole because I might be using this more than a few times and I want it to last.
This thing works surprisingly well and the round bar bends very easy.