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Metal molding, paint pusher

Metal molding, paint pusher

Metal molding, paint pusher

(OP)

Hello,
I've got a seemingly simple problem with a thickness of 1mm sheet DX53 with white coating.
I will pre-punching a rectangular hole with 100x150 8mm depth collar and corner radius of 8mm and ask.
Of course, this silly paint pushes in from the corner with a drawing die radius of 3mm.
How should drawing the die, so that the paint is not at the corners to be deported.
Or you can i do it better in 3-4  steps:
/ bringing forward cut / trimming / Through points or so?
Can you provide through the corners a little more and then the flat rest?

Thank you already times in advance for the tips

Greeting arnoldicat

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