|Release||8 March 2011 (Update)|
|Destroy||You will need to make more in the Cannon Room's furnace using steel grade II ingots.|
|On death||Always lost|
|Examine||A cog from a cannon.|
Cannon cogs are used when repairing Dwarf multicannons within the Artisans Workshop. To make them, you should repair Broken cannon cogs on an anvil, or make new ones in a furnace with a steel ingot II and a Cog mould in your inventory. Ten of these cogs need to be added to an Empty cannon base in order to repair it, making a Cannon base.
This item can be taken outside of the repair area, but cannot be banked.