I checked every forgery in every region and nowhere they needed those
Commentaires
rajine1052026-01-23 20:54
You can use them at any forge. Did you try crafting? You might not have all the material and it may be greyed out
SisterTereza02026-01-23 20:56
I did but there is no catalyst or claymore weapon that needs those😭I thought I am just blind
tachycardicIVu2026-01-23 21:03
Have you obtained the recipes/blueprints for all of them? Some aren’t purchasable.
Alpha06Omega092026-01-23 21:07
You need the blueprints, usually though a npc somewhere in the region
Azael_Ijima2026-01-23 20:55
Those are Midlander Billets i think, they are specifically used for Sumeru and Fontaine weapons.
For Fontaine weapons you can just buy the recipes with mats at the Fontainian smith.
For Sumeru recipes you gotta advance the Aranara quest until you can get them.
gensao2026-01-23 22:20
[Midlander Billets](https://genshin-impact.fandom.com/wiki/Midlander_Billet) are [Forging Materials](https://genshin-impact.fandom.com/wiki/Forging_Materials) used in [forging](https://genshin-impact.fandom.com/wiki/Forging) 4-Star [weapons](https://genshin-impact.fandom.com/wiki/Weapons) of the [Aranara Series](https://genshin-impact.fandom.com/wiki/Aranara_Series) and [Beaumont Series](https://genshin-impact.fandom.com/wiki/Beaumont_Series).
Commentaires
For Fontaine weapons you can just buy the recipes with mats at the Fontainian smith.
For Sumeru recipes you gotta advance the Aranara quest until you can get them.