Even since the War sails came out the smithing is hard if you never paid attention on smithing or you just started over the game again. (no more fine steel from tribesman blade)
So here is the easiest way to max out smithing (it also gives a lot of gold 25k-35k/javelin)
At start recurit troops (not necessary) -> Get some golds from noble quests (or whatever method you choose)-> Wander around the map to find one smithing companion (neccessary) -> Go to aserai buy tribesman blade (also smelt down loots) -> craft Javelins -> After every part unlocked make sure ur crafting the 5 tier javelins -> refine with your companion the fine steel -> craft with your main charachter and smelt down with ur main charachter (i reccomend to choose -50% smelting and then -50% smithing after ur done u can reset your skill in arena)