Quote:
Originally Posted by Tim Hancock
If you need to weld the flap to the shaft, I would simply drill a couple small holes in the flap where the original crimp indentations are and then I would simply rosette weld them with the tig welder..... Very simple IMO...

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THIS IS THE WAY TO DO IT. There won't be any warping problems.
Short of this, epoxy the shaft to the flap. The problem with that is getting enough epoxy between the sheet metal and the shaft.