I have been looking for some time for any stainless steel ramp flaps for the Twilight Zone but no luck... vendors either don't carry it or they are out with no restocking date.
Does anyone have any recommendations and material specs for making your own? I have blue spring steel stock and I could use that, but that base material is not stainless and it often corrodes.
Also, any recommendations for making the corners even and nice (something like a corner rounder punch, but actually capable of cutting through thin steel stock)?