Possible Clues:

• Force the architect to take grinding action
• Grind, like teeth
• Grind and cut small number inside
• Grind (the teeth)
• Grind, in one's mouth
• Harold at first confessed rising up to snap in anger
• Good wood flanks new grate
• Bite in rage
• Grind magnet smashed in the middle
• Grind, as grinders