This concluding article gives details of the final stages of the production of light-alloy gravity diecastings at a Rolls-Royce Shadow factory, and ends with a review of the characteristics of five important alloys. For the information contained in this series of articles we are indebted to Mr. J. Vickers, manager of this foundry.

This article first appeared in the Volume 5, Number 61 (November, 1943) issue of Aircraft Production magazine, and is presented here through the kind permission of Flight International. Thanks also to Bruce Vander Mark for furnishing volumes of Aircraft Production for scanning.