Weaponsmithing How to obtain Antique Metal

Hi everyone,
So I have reason to need Antique Metal, but the wynndata page just lists it as dropping from "Obsidian Sentinel".
Do I have to do millions of dps and kill it before it explodes, or is the page referring to the first stage?
Thanks!

 

you just need to kill the first stage and pray. or loot chests

 

dont expect the sentinels to drop it, just loot chests

 

run morph and hunt them sentinels, or just loot chests lmao

 

I'll end up going through all the ingredients and updating all the info on how and where to obtain ingredients, but it takes a long time. I kind of never got around to updating past ingredients level 1-63, but I think Antique Metal drops from those general sentinel mobs there. I'll update it eventually though