what’s the best way to level crafted weapons?

[fallen nymph]

I see people saying they can level 3 weapons at once but I don’t really understand how or if it’s the best way

[grave ibex]

best way to level up single weapon is shuro chi or the golgoroth cp, iirc to level multiple weapons you just equip the weapons at the end of an activity

like at the end of a crucible map that gives about 33%(?) progress per weapon so that's a passive way to do it