3D-printed tools for turning vise into press brake - video

[Toolmaker51]

Not a bad creation. 3D printing of course not required.
This bending process is known as air bending, so stated in video. He covers the concept quite well. Including stable die alignment.
Only detail missed [probably there but I was writing already] bending capacity is formulated by thickness first - then width - that determines pressure required. So trouble could ensue against .156 aluminum x 4" wide compared to 20 gauge steel of same width.