Listen up, apprentices! Learn how to smooth and shape metal – an important wartime skill.
| Release Date | January 1, 1941 | |
|---|---|---|
| Status | Released | |
| Original Title | How to File | |
| Runtime | 8min | |
| Budget | — | |
| Revenue | — | |
| Language | English | |
| Original Language | English | |
| Production Countries | United Kingdom | |
| Production Companies | Shell Film Unit | |