| Year | 1951 |
| Date | 12-Jul |
| Volume | 105 |
| Issue | 2,616 |
| Page | 52 |
| Category | In The Workshop |
| Part | 93 |
| Title | A Simple Tapping Machine |
| Author | "Duplex" |
| Notes | The complete machine, the machine table, the modified vice with its chip tray, construction, the handle assembly, the table stop-collar, tap driving clamp-collars |