| Year | 1953 |
| Date | 26-Mar |
| Volume | 108 |
| Issue | 2,705 |
| Page | 392 |
| Category | Workshop |
| Part | |
| Title | Making and using broaches |
| Author | Lawrence H.Sparey |
| Notes | The broaching process, design characteristics, round broaches, making round broaches, spiral broaches, square, hexagon, etc, broaches, materials and hardening, using broaches |