| Year | 1938 |
| Date | 26-May |
| Volume | 78 |
| Issue | 1,933 |
| Page | 500 |
| Category | Workshop |
| Part | |
| Title | Boring Long Holes in Hard Woods |
| Author | |
| Notes | Some Practical Hints on an Unusual Workshop Problem. C.H.Chaplin, detail in section showing method, boring a cylindrical hole, using a D-bit, taper-boring, some further hints, boring cutter with cross blade |