(actually it wasn’t full 12 as it was threaded and long story short it WILL be a solid 12mm going forward starting today.) but this is a long span for sure on these and likely hardened so more likely to snap than bend. but at maybe only 300$ for a set that gives you a lot extra for possible medical work later.
its pretty new to me but speaking of hardened axles it seems you can get a hardened axle into a cast hanger or a forged (why forged is worth doing don’t know as the aluminum isn’t going to be the part that bends and I imagine that’s the forged part). so you can get a hardened axle in a cast hanger as the aluminum doesn’t get to the critical temp of the steel to anneal it. or you could press it. maybe would anneal slightly