Flange in shim stock
 

I want to take a piece of .030 brass shim stock,
put a hole in the center, then press the material
around the hole to make a flange. Finished hole
opening is .6". It will then be used to slide
over a cylinder.

What's a good way to create the flange?
Best I can think of so far is a "tapered punch"
and something to hold the shim with a hole
in it. Only need to make one or two.


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Thanks,
Wayne D.