| Year | 2015 |
| Date | 15-May |
| Volume | 214 |
| Issue | 4,508 |
| Page | 741 |
| Category | Workshop |
| Part | |
| Title | Penn Nut Derivatives |
| Author | Ted Jolliffe |
| Notes | Looks at the history of the genre and shows how to make them for use in model engineering. A problem solved, manufacturing index blocks, Penn nuts, another variation, special spanners |