| Answer | Crossword Clue |
|---|---|
| MANGANESE | Metal for hardening steel. |
| MANGANESE | Metal used for hardening steel. |
| file | a tool usually of hardened steel with cutting ridges for forming or smoothing surfaces especially of metal |
| burin | tempered steel rod, with a lozenge-shaped point and a rounded handle, used for engraving furrows in metal |
| burins | tempered steel rod, with a lozenge-shaped point and a rounded handle, used for engraving furrows in metal |
| driftpin | round, tapering piece of steel for enlarging holes in metal, or for bringing holes in line to receive rivets or bolts |
