Marc,

Gibson in his book on Krieghoffs makes a point to graphically illustrate the various shapes, milling, machining and finishing techniques used by Mauser, Simson and Krieghoff. Makes very interesting reading to see how these three manufacturers approached production of basically the same design. For example the milling patterns on the rear of the frame are one of his areas of study.

John

Great source, Tks
 

I know I have a copy AKA The other Blue Book with pretty letters!

I don't have the book, but find the process of machining very interesting.

Some of the highest level skills in the world after the industrial revolution were cultivated by the machinists. My grandfather worked as a machinist making commercial sewing machines in the 1910-1940 period. I'm confident that they used the same techniques as the German plants. There was no numerical control so repetitive tasks holding standards relied on skill.

This area of the frame appears to be one of the less critical, so it looks like more variance is present and visible.

Until I can get access to Gibson's book, it would be interesting to know an overview of the processes in the different plants, and if the later holders of the manufacturing equipment followed the same processes as the original companies.

Marc

Thanks for the informative post, John. From a newbe LugerMann. Cheers.