Crafting question

I’m not understanding the enhancing process. I have a 4* MUB fully leveled tier 2 weapon and all the needed materials and rupies to enhance to elemental, but the enhance screen says I don’t meet the conditions and the only indication of something missing is “Exp Needed.” What is this requirement? I can’t find any information on it anywhere.

Well, you would normally need to level a weapon to its max level before enhancing it to a higher tier. This requires either sacrificing other weapons, which doesn’t give much exp compared to the other method, grindstones.

So just go to the upgrade screen -> weapons, select the weapon, and level it to max level.