| Year | 1994 |
| Date | 04-Feb |
| Volume | 172 |
| Issue | 3,962 |
| Page | 151 |
| Category | Workshop |
| Part | 2 |
| Title | The end of a boring problem. Sharpening small drills |
| Author | D.A.G.Brown |
| Notes | Concludes his description. Holding the drill, collets, trial run, improvements with diamonds |