John Dewey wrote about obtaining steel rule dies to punch out gaskets
easily.

Good sources of steel rule dies are available in most larger cities.
If a source is not readily apparent, a quick request to one of the
larger commercial printing plants (typically not a newspaper) in your
area can get you the name of one or more die makers.  Sometimes, stan-
dard dies are available that may meet your dimensional requirements
and cost less than a custom die.

Henry Holifield
hohueben@eden.com