Guides
For Rebirth 6 - 11 you need to get Pineapple Tarts inorder to make the Required RB items. You can get Pineapple Tarts either by doing the Capability Quest, or by combining the rewards of Class Based Quests.
Crafting Success rate of Rebirth Items is 100%
Pineapple Tart = Ur(1) + Thorn(2) + Ken(3) + Legend of Kwaon + Legend of Sirrd + Legend of Redyan + Legend of Billmade.