| Year | 1939 |
| Date | 14-Dec |
| Volume | 81 |
| Issue | 2,014 |
| Page | 654 |
| Category | Model Machine Shop Practice |
| Part | 7 |
| Title | Grinders and Grinding |
| Author | Ernest F.Carter |
| Notes | How a wheel cuts, grades and numbers, choice of wheel for work, speeds, speed of work, wet or dry? Vibration, sectional sketch of grinding head, spindle lubrication, mounting wheels, "elastic" wheels, two fallacies, a few hints, belt joints |