| MACHMETER | There's a boom when it reads 1, caused by hammer etc (9) |
| MACHNUMBER | There's a boom when it goes over one (4,6) |
| DENT | A slight mark or hollow in a surface made by a blow with a hammer, etc |
| TRIGRAM | The inscription reads 'One old King got into transport here' (7) |
| UNGUARDED | Rash, one caused by such a fire? |
| BLACKSMITH | An artisan who works iron with a furnace, anvil, hammers, etc (10) |
| EASYCHAIR | Comfy furniture on which one might read 1 down (4,5) |
| TOOLBOX | Container for spanners, hammers etc (7) |
| MUG | One might read "#1 Dad" |
| TRAUMA | A psychic injury, especially one caused by emotional shock (6) |
| RIFT | -- valley, one caused by subsidence (4) |
| MUSHROOMS | Get moving ___ accommodation undergoes a boom (9) |
| SPAR | "There's a boom coming up," one says sharply (4) |
| OILSLICK | A film on sea paintings by Hammer? (3,5) |
| STAIDER | When excited, it reads as less excitable (7) |
| TREASURE | It reads true, without degree, becoming a thing of great value (8) |
| PALINDROME | Whichever way you look at it, it reads the same (10) |
| PLEXOR | In spin, Lion's caught by Hammer (6) |
| GRAVEL | Small stones start to rattle, pounded by hammer (6) |
| WOW | If read upside down it reads as mom |
