Blacksmithing is a skill that should be mastered, for your Furian life depends on it. You use lumberjacking and mining to craft items, for they are essential to this skill. Without lumberjacking and mining, blacksmithing would be incredibly difficult. Blacksmithing is more complex than the previous skills and requires knowledge and patience to create the best equipment.
This has its own panel in the APO to allow players to see every crafting recipe and what items are required to forge said equipment and also has its own experience bar. If you have sufficient skill to craft a certain item it will be highlighted green in the APO. Once you have sufficient materials you need to head down to your local blacksmith and use his anvil.
Experience gain is different in smithing compared to others. With blacksmithing you will usually craft only one item a few times, if at that, and has been taken into account when we created the experience table. Better items, such as a royal sword, will yield much more experience than a string.The full experience chart can be found here.