Graveyard Keeper 2 Iron Kit II — Smithy II Upgrade and Clay Molds

What is Iron Kit II in Graveyard Keeper 2?

Iron Kit II is the second tier of the iron kit line. Iron Kit I is the common building kit used by town stalls and workshops; Iron Kit II is the scarcer metal kit required by the Smithy II upgrade and by higher-tier construction. It is not a tool and it is not a weapon. It is a component, and its job is to be consumed by a station or a building.

The shipped recipe extract used across this wiki records Iron Kit II as a Smithy II product and as one of the Smithy II upgrade materials. It does not expose a standalone recipe row with an input count, so this page does not invent one. What is verifiable is where the kit is spent, what else the upgrade demands, and the clay line that feeds the kit chain.

Item	Tier	Role
Iron Kit I	Basic	Town stalls, repairs, Iron Anvil and Smithy I output
Iron Kit II	Advanced	Smithy II upgrade material, higher-tier construction
Engineering Kit	Advanced	Smithy II upgrade material, Assembly bench recipes
Clay Mold	Intermediate	Feeds Iron Kit II and Engineering Kit production

What does the Smithy II upgrade actually require?

The full upgrade list is 6 Reinforced Beam + 12 Steel Screws + 4 Engineering Details + 1 Iron Kit II + 1 Engineering Kit + Supply: Steel Tools. Six different lines converge on one building, and each one has its own bottleneck.

Material	Amount	Where it comes from
Reinforced Beam	6	Woodworking / Building chain
Steel Screws	12	Steel Anvil
Engineering Details	4	Engineering chain
Iron Kit II	1	Smithy II production line
Engineering Kit	1	Smithy II / Assembly bench
Supply: Steel Tools	1	Smithy supply chain

The Steel Screws are the volume problem: twelve is not a small batch, and each one consumes steel. The Engineering Details are the precision problem: four of them means four successful engineering crafts, not four ore. The Iron Kit II and Engineering Kit are the knowledge problem: you need the station output and the clay input line before either can be made.

That is why the upgrade feels expensive even when the metal is ready. The iron guide covers the ore-to-ingot half, and the steel guide covers the steel tier that feeds the screws.

Where do Clay Molds fit in?

Clay Molds are the input that connects the clay pit to the iron kit line. The recipe is 2 Clay + 1 Coal at Smithy II, and the output feeds both Iron Kit II and the Engineering Kit. Clay is a gathering-stand resource, so a zombie on a clay stand can keep the mold line supplied without player input; coal comes from the same miner loop that feeds the furnace.

Build the mold line before you attempt the upgrade. A Smithy II without a clay stock is a station that can make the kit in theory and never in practice, and the Engineering Kit has the same dependency. The runes and clay guide covers the clay side, including why the molds are a station craft rather than a hand recipe.

The mold recipe is also a reminder that Smithy II is not only a metal station. It is a production hub with a clay input, a steel input, and an engineering output. Treating it as a bigger anvil is the usual reason players stall at the upgrade screen.

How do you make Iron Kit I first?

Iron Kit I is the proof that the chain works. It takes 1 Iron Ingot at the Iron Anvil, needs Iron Works and Iron Anvil mastery 7, and runs for 8 ticks. That is the whole recipe: one ingot, one kit. The iron guide lists it beside Iron Nails and Iron Detail at the same mastery band.

Iron Kit I matters beyond the tutorial because town restoration eats it in bulk. A single Apothecary, Vegetable Stand, Tailor, Builder or Smithy costs 4 Building Kit I + 3 Wooden Kit I + 1 Iron Kit I. Furniture Maker, Baker, Fish Stand, Tavern and Brewery ask for 2 Iron Kit I each, and Alchemist and Jeweler ask for 3. A full town rebuild can consume a dozen kits before you ever reach Smithy II.

That demand changes the order of operations. Do not sell Iron Kit I as surplus while town plots are still boarded up, and do not convert every ingot into nails. Keep a stack of kits, then start the Clay Mold line for the tier above.

What is the practical build order?

1. Finish the iron chain. Iron Ore into Iron Ingot at Smithy I or Furnace II; keep the anvil free for kits.
2. Stock Clay and Coal. A clay gathering stand plus the existing miner loop covers the mold recipe.
3. Build the Clay Mold line at Smithy II. Two Clay and one Coal per mold, feeding Iron Kit II and the Engineering Kit.
4. Bank the steel. Twelve Steel Screws and four Engineering Details are the bulk of the upgrade; start them before the kit.
5. Secure the kits last. Iron Kit II and the Engineering Kit are the items that stall the upgrade while you are still short of beams.

The exact input line for Iron Kit II beyond the clay mold is best read from the live in-game tooltip. The shipped recipe extract used across this wiki records Iron Kit II as a Smithy II output and the mold as its feeder, but the per-craft counts vary by build and should not be copied from a preview. What is stable is the dependency: molds feed kits, kits feed the upgrade, and the upgrade opens the station that makes the next tier.

Source: gamebalance_full.json — craftDefs[].needItems and buildDefs, build 25509347; upgrade material list cross-checked against the Smithy II build panel. Town kit costs follow the shipped restoration recipes summarised in the town restoration and shops guides.