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Frustrating, but hopefully simple sheet metal question


Hi, I am trying to model a bumper and I want to laser cut it from sheet metal and bend it to shape, its a pretty standard Landrover Series 2 Bumper, but the part is giving me headaches.

IIt is basically a c section, but the curves at each end are getting me stuck, I can get the sides correct (and they can fold flat) but the large 65mm radius at each end that will bend and be welded along the edges is causing me problems.

Hopefully the screengrabs will help show the problem.