| Year | 2020 |
| Date | 06-Nov |
| Volume | 225 |
| Issue | 4,651 |
| Page | 625 |
| Category | Workshop |
| Part | 1 |
| Title | Drill Press Improvements. Spindle Speeds |
| Author | Jacques Maurel |
| Notes | Upgrades his drill press. Design choices, spindle driving pulley, geometrical progression of speeds |