NC Tool's NC Knifemaker 21 Forge features low fuel consumption, reaching welding temperatures set on 5 PSI. Other features include three high-temperature, cast iron burners; 4 x 4.5 x 21 in. firebox; a solid door; and a 2 x 3 in. port on the end.

The Knifemaker 21's safe valve train design delivers fuel to the heat chamber. It has 2-in. insulation for long liner life and a high-temperature cast iron open-end port for accessing knife blade parts and heavy use.

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