| Year | 1952 |
| Date | 26-Jun |
| Volume | 106 |
| Issue | 2,666 |
| Page | 839 |
| Category | In The Workshop |
| Part | 118 |
| Title | Locking the Lathe Mandrel |
| Author | "Duplex" |
| Notes | Positive lock, locking the mandrel from the bull wheel, parts of the double-cone adaptor, the Myford-Drummond wheel-guard with detent in place, components and details |