Finally, the upper differential mounting bracket is finished:
It started with this idea:
Welding was not so easy. During welding the complete bracket has to been fixed to keep the surface planar:
Other building lot: I don't now why there is a big slice missing in the main instrument bracket
I think it is zinc diecasting and my welder told that I should try fluid metal. This is a kind of two-component adhesive containing metall dust. When it is hardened you could machine it like normal metal.
First a small piece of aluminium
closing the hole
Two small aluminium plates above and below give more strength
I could grind it like the normal metal and even after sand blasting everything was fine
Should be strong enough to be covered by leather ...