As expected, the production of mana fruits slowed down the moment Leon started to separate and try to craft weapons out of the dragons' bones. Since he had to do that between battles, he didn't have much time. So, in the end, Leon decided only to use the most massive bones.
The ideal option would be to create other giant mithril weapons, but Leon would have to spend too much mana, and he didn't have enough mana or time. Even though the dragons' bones were resilient, Leon's idea started to take shape pretty fast.
Bone Spear of the Ice Dragon
It grants you: Strength + 3000, Endurance + 3000, Speed + 3000
"Mmm... it is much better than I expected," Leon nodded to himself. "I guess the fact that I spend a day crafting is also affecting that."