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).
The properties and usage of different moulding powders for manufacturing parts.
| Identifier | ExFiles\Box 61\1\ scan0120 | |
| Date | 29th May 1930 guessed | |
| -2- It is understood however, that the Stiff powder is somewhat more difficult to mould, so that for this reason production may prefer to use two powders, i.e. the ordinary bakelite X.616B and the Stiff X.616B. reserving the latter for use in moulding parts where contraction is of consequence. Whether the grade XM.1000 is used at all, depends entirely on its capability of withstanding tracking. EFC/CAP. | ||