OK, "no sweat" you say.
What's another hatch wen the first one went so well.
Well,...this ones curved!
Yes, the back of the coach is a flat surface, but the sides are curved.
And as a result the hatch door and frame must be curved to match.
Now a small hatch could ignore the curve, like the outside shower, or the fridge hatch.
But this hatch is much too tall to not honour that lovely curve.
So I set out with experimenting bending the aluminium extrusions.
Eureka, with gentle force against a sand bag, plentiful here on the beach, I was able to create beautiful curves in both the door extrusions and the frame.
Soon enough I had a generator locker hatch.