Quote Originally Posted by Empty-handed View Post
"Aged Spear (r55) -> 1-2x FC2, 1x Aged Spear Shaft (EY: 0.2) (needed for Zodiac Weapon, buy for 3k from Silver Bazaar vendor)
Perfect Firewood (r90) -> 1-2x FC3"

i have been spamming this daily since release of the zodiac weapon quest. and i have never gotten FC2!! either i get Aged Spear Shaft (the rate for this 1 out of 10 desynths). or junk lumbers/ingots. or clear demi 2. (1 only).

also i never got FC3 from desynthing the NQ Perfect Firewood!!! (only when i fail HQ crafting them. not very often)
My data on this could easily be bad. I never made these items for desynth myself, but other people reported FC2 and FC3s from those. Here's someone saying they obtained FC3s from the i90 crafted items:

Quote Originally Posted by Espritduo View Post
Fun fact: The 3-star items you need to make with the new desynthed items are desynthable as well, and can yield 2 FCIII's. So if you nq one (like I did...), don't forget to desynth them and maybe get something for your troubles.
I don't have a source for the FC2s from the i55 vendor items. I don't recall where I heard that. I'll mark them as unconfirmed next time I update the guide unless someone can confirm them for me.