| Clue | Source | Date |
|---|---|---|
| Board cutters | Thomas Joseph | 12 Dec 2022 |
| Notches on a cutting blade | Newsday | 24 Mar 2020 |
| Blade serrations | Newsday | 23 Aug 2015 |
| Blade serrations | ||
| Cutting-edge features | ||
| Tool serrations | ||
| Tool serrations | ||
| Cutting-edge features | ||
| Blade serrations | ||
| Notches on a blade | ||
| Serration |