| Year | 1996 |
| Date | 20-Sep |
| Volume | 177 |
| Issue | 4,025 |
| Page | 313 |
| Category | Workshop |
| Part | 2 |
| Title | Four Facet Drill Sharpening: Extending the Range |
| Author | D.A.G.Brown |
| Notes | Describes six-facet drill grinding acknowledging help from John Anning of SM&EE. Now add two more facets! Multisize collets, concentricity, aids to easy living, procedure |