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).
Extract about improving the finish of aluminium castings, like gear boxes and crankcases, by washing them in paraffin after sandblasting.
| Identifier | ExFiles\Box 148\3\ scan0013 | |
| Date | 28th June 1921 | |
| X.1476 Extract from EP{G. Eric Platford - Chief Quality Engineer}/Thn12/F28.6.21. X.3719 X.1476 Aluminium castings, gear box, crankcase etc. seem better than ours. After sand blasting they wash in paraffin. They appears to remain clean and do not "patch up" with oil as ours do. Will Wor.{Arthur Wormald - General Works Manager} please try. EP.{G. Eric Platford - Chief Quality Engineer} | ||