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I believe that you mean 1mm or 0.04 inch. That blade appears to have been stamped to that dimension. That is about a minimum to leave for heat treating.
You might do as suggested and run a good...

Your blank will be a lot easier to work than was mine! It is almost all the same thickness and will clean up fairly easily. I used a sanding block of a little less than 1½ inches diameter to get the...