Make sure that your fire pot can handle the extra heat when using coke. We offer Met-Grade blacksmith coal and coke fuel for your forge. Shop Blacksmiths Depot for coal, coke and other forge supplies like high carbon steel.
Remember that these fuels light better on the side where air comes in. Lighting coke with a torch from the top may not always work. Just like a campfire must be lit from the bottom, so should your coal or coke forge fire be lit from the bottom.