Using the Upgrade: cart modifier on a cart that has the smelter addon and removing it , will give you a coal engine back instead of the smelter. also if the cart has the woodcutter and you disassemble the cart it will regenerate the durability of the woodcutting tool.
not sure if intended or bug.
Forge 2768 Steves carts: 2.4.27.127 reborn core: 3.10.6.355
Using the Upgrade: cart modifier on a cart that has the smelter addon and removing it , will give you a coal engine back instead of the smelter. also if the cart has the woodcutter and you disassemble the cart it will regenerate the durability of the woodcutting tool. not sure if intended or bug.