I finished welding the mini-brake together today and tried it out. My hope is that although I am spending time building tools (and not building airplane parts) the tools will improve the speed and quality of future parts I build. As it turns out, with the 40 inch large brake, and the 20 inch mini brake, I was able to build the hat section stiffener shown in the pictures in 15 minutes.
Using the larger brake to make the U channel bends
Now pressing the reverse bend in the mini brake (note short flange height would not fit in big brake)
