From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Instructions for the use and post-weld cleaning of Lumiweld welding powder.
| Identifier | ExFiles\Box 117\1\ scan0077 | |
| Date | 5th March 1936 guessed | |
| -2- Welding powder Lumiweld must always be kept dry and free from the air. To use it one mixes it with water to obtain a fluid paste (about 2 parts of powder to 1 part of water). It is recommended that one uses for this a receptacle of glass or enamel. When the weld is completed one carefully cleans the piece removing every trace of welding powder, which would subsequently attack the metal. The best means of doing this is to brush the piece vigorously in cold water. | ||