| Year | 1949 |
| Date | 27-Jan |
| Volume | 100 |
| Issue | 2,488 |
| Page | 101 |
| Category | In The Workshop |
| Part | 29 |
| Title | Cross-Drilling |
| Author | "Duplex" |
| Notes | The base block, making and fitting the saddle plate, guide collets, fitting the workstop, assembling the jig, the jig in use, cross-drilling and cross-boring in the lathe |