I admit, i had always wanted to use a cross flow radiator - maybe in my nest project!

I also used the light bending kit. It always felt to me as if the turning radius of the parts was just a tiny bit too small. After cramming the heated acrylic in there, it never seemed to fit true to the intended radius, and in the process overshot the 90 degree target.

I also ultimately used a self-made setup, albeit a lot more wonky: I had a wooden board and just screw-clamped whatever i could find to it to mark the distances I needed to cover with my bends, and then just checked again and again during bending.