Every recipe has a tier; all used injectors need at least that tier.
Basic Fusion Crafting Injector (10k RF/t) →
Wyvern Fusion Crafting Injector (100k) →
Draconic Fusion Crafting Injector (1M) →
Chaotic Fusion Crafting Injector (10M).
Higher injectors charge faster and shorten the fusion (10 s → down to 2.5 s). Upgrades are fusion recipes.
