Direct recipe dependencies · Wiki-backed

Equipment
upgrade chains.

Three upgrade paths derived only when a later recipe explicitly consumes the earlier equipment.

Evidence boundary

Dependency is proven; unlock timing is not

The tier order below follows direct recipe inputs. It does not claim when blueprints unlock, which upgrade is optimal, or where to gather materials.

Recipe-linked chain

Tier	Result	Required prior item	Additional inputs	Station	Source
1	Standard Air Tank	Base recipe	Titanium ×2, Rubber ×1, Silver ×2	Fabricator	rev 19981
2	High Capacity Air Tank	Standard Air Tank ×1	Plasteel Ingot ×1	Fabricator	rev 19977
3	Ultra High Capacity Air Tank	High Capacity Air Tank ×1	Troilite ×3, Atacamite ×3	Fabricator	rev 19978

Recipe-linked chain

Tier	Result	Required prior item	Additional inputs	Station	Source
1	Basic Fins	Base recipe	Rubber ×2, Fiber ×2	Fabricator	rev 19974
2	Improved Fins	Basic Fins ×1	Fiber Mesh ×1, Conduit Crystal ×2	Fabricator	rev 19975

Recipe-linked chain

Tier	Result	Required prior item	Additional inputs	Station	Source
1	Scanner	Base recipe	Titanium ×2, Quartz ×2, Basic Battery ×1	Fabricator	rev 20673
2	Bioscanner	Scanner ×1	Enameled Glass ×2, Conduit Crystal ×3	Modification Station	rev 20305