Looking at 1911 Castings

We have a friend in full-scale firearms manufacturing who was looking at making a large run of 1911 pistols. In order to reduce his machining costs, he bought a sample batch of frame and slide castings from Coast Metal Casting – and they turned out to be next to worthless. So we borrowed a set from him to take a look at. What makes a casting good or bad, anyway? Well, let’s see:

If you are interested in seeing how 1911s were mass-produced before the advent of CNC machines, you’re in luck! We have a copy of an article from Machinery magazine printed in 1942, which discusses the process in some depth:

Making a World-Famous Automatic Pistol, by E.P. Herrick, Colt Production Engineer (Machinerymagazine, December 1942)