Gonna repost here what I posted in that thread. This goes out to all the people looking for more Crimson/Carmine:
The best way to acquire
handful of wyvern scales in large volumes:
1) Find a location where there are some wyverns. I prefer Ifrit's Cauldron at Vouivre, but Riverne B home point, Kuftal basement, Jade Sepulcher home point all work, and I might be forgetting some other spots.
2) Go as either THF or a job with very good fast cast.
3) Summon Nanaa Mihgo trust and engage some wyverns. For whatever reason, her success rate with Despoil (which earns you what she nabs) is much higher than players.
4) Here's the tricky part: Triggering Nanaa's Despoil seems to be based on either hate you've accumulated on the enemy or damage you've dealt, I need to test this more. On Hurricane Wyverns, as THF I melee them down to 50% and then turn, and she'll regularly Despoil. The superstitious part of me thinks it might happen more if she's closer and behind the enemy but that's probably not the case.
5) After killing the wyvern, resummon her and repeat. Farming in Ifrit's is nice since there are 4 or 5 spawns (depending on Vouivre window, and he himself will drop a scale) in one small location.
By the way, during this BCNM event, enemies in KC/HKC fights can drop Penelope's Cloth, Staghorn Coral, Sealord Skin, Belladonna Sap, Serica Cloth, and Scarletite Ingot. Tenzen II also drops Scarletite on all difficulties at a not terrible rate.