1906 safety rework

[Roadster 02]

Does anyone know how was this accomplished? I know some were milled out leaving an oval shaped "slot", others appear ground out, but the ground area is still on the same level as the upper area, and you can still see the original milling circles above. Were the letters welded over then ground smooth? If the letters were just ground out there would be an area where the metal was lower than rest.

[DonVoigt]

Originally Posted by Roadster 02

So how was this accomplished? Were the letters welded over then ground smooth? If the letters were just ground out there would be an area where the metal was lower than rest. Like the pics where the letters were milled out.

Hard to tell, but the lower area looks "lower" to me; if you were to remove the thumb lever, you might be able to determine the answer.