| Year | 1939 |
| Date | 02-Nov |
| Volume | 81 |
| Issue | 2,008 |
| Page | 501 |
| Category | Model Machine Shop Practice |
| Part | 6 |
| Title | Taps, Dies, and Screwcutting |
| Author | Ernest F.Carter |
| Notes | Section through a tap, tap in a blind hole, effect of wrong sized hole, drill hole too large, tapping diferent materials, correctly matched tap & hole, small taps, stock and dies, hand chuck, screw-plates, general hints, lubrication, tapping drill tables |