| Year | 2023 |
| Date | 01-Dec |
| Volume | 231 |
| Issue | 4,731 |
| Page | 754 |
| Category | Workshop |
| Part | 4 |
| Title | A Method of Manufacturing Piston Rings of the Clupet Style |
| Author | Martin Gearing |
| Notes | Discovers how to make these rings himself. Slitting saw coordinates, heat treating mandrel |