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The blades were stamped from a sheet or strip and then hardened so all were the same.
The interesting thing is he did not patent the idea so I know of at least 5 different razors using the same...

The had a "jig" for a milling machine and used a cutter similar to a saw on a stick. They started the cut away from the toe after they had drilled and tapped the hole for the screw. Then ran the...