Forgery · Kzeroko's Workshop

Forgery is where KTM2-specific weapons, armour, accessories and off-hand items come from. Apart from reading a blueprint, the entire process has no GUI — you place real items on a real anvil and hit them.

A forgery anvil at rest, blueprint slot empty — An idle forgery anvil. Everything you do to it happens in the world.

Controls

Everything is an interact on the anvil; which face you click decides the amount.

Holding	Top face	Any other face
Materials	Place one	Place everything you are holding
Forging hammer	Take one back from the last filled slot	Take the whole slot back
Valid blueprint	Write the blueprint (item is not consumed)	Same
Dissolving potion	Clear the forging state (potion is consumed)	Same

The loop

Read the plan. Hold a valid blueprint and press Shift + Use to open its recipe. Esc closes it.
Write the blueprint to the anvil. Interact with an anvil that has no blueprint. The item is not consumed — the anvil takes a copy. An empty sheet will tell you it is blank instead.
Place the step’s materials. Order matters. Fill the slots the current step asks for.
Strike. Stand level with the anvil, within about one and a half blocks, with your crosshair on the top face. If you are not aimed at the top, the game will say so. Each hammer blow adds forging progress according to the hammer’s rarity.
Repeat for each step until the result pops out.

Writing a blueprint onto the anvil — Writing the blueprint copies it; the item is not consumed.

Placing ingredients on the anvil — Top face places one, any other face places the stack.

Opening a blueprint to read its recipe — Shift + Use on a blueprint opens the plan without touching the anvil.

Striking the anvil with a forging hammer as progress fills — Progress per strike scales with the hammer's rarity.

Clearing a botched attempt

Hold a dissolving potion and interact with the anvil. The potion is consumed; the unused materials sitting in the anvil are not.

Pouring a dissolving potion to reset the anvil state — The potion clears the forging state and leaves your materials alone.

Breaking the anvil also clears the state, but it is tough and mines at the same speed with every tool, so this is the slow option.

Mod compatibility

Jade shows the anvil’s current state on the tooltip — whether it is waiting, which blueprint it holds, which ingredient is next, and how much progress the current step has.

Jade tooltip on an empty anvil — Waiting

Jade tooltip showing the written blueprint — Blueprint written

Jade tooltip showing the required ingredient — Next ingredient

Jade tooltip showing forging progress — Progress

Jade tooltip warning that ingredient order matters — Order matters

Jade tooltip advancing to the next step — Next step

Jade tooltip on a completed forge — Complete

REI lists forgery recipes with their steps. You can look up what a blueprint needs without owning it.

A multi-step forgery recipe shown in REI

Planned

Dependency on and integration with alloy-forgery.
More hammer tiers.
Blacksmith profession compatibility: gear forged by a blacksmith gains extra item rarity, with a guaranteed floor and improved odds above it.

Recipe format

Recipes live at data/<namespace>/recipes/ise_forgery/<id>.json with type isekaiexpansion:forgery.

Field	Meaning
`result`	The single output item.
`steps`	Ordered forging steps. Keep it to 10 or fewer — more is untested and may misbehave.
`forgery_progress`	Progress required to finish this step. Each hammer contributes according to its rarity, so budget accordingly.
`ingredients`	Materials for this step. Maximum 9.
`count`	Amount of that material. Must fit in one stack (≤ 64).
`item`	Material item id.
`should_render_ingredients`	Whether to render placed material models on the anvil.
`display_item`	Item id rendered as the work-in-progress. Not obtainable; presentation only. Usually omitted on the first step.

{
  "type": "isekaiexpansion:forgery",
  "result": { "item": "minecraft:diamond_sword" },
  "steps": [
    {
      "forgery_progress": 100,
      "ingredients": [
        { "count": 2, "item": "minecraft:iron_ingot" },
        { "count": 1, "item": "minecraft:stick" }
      ],
      "should_render_ingredients": true
    },
    {
      "display_item": "minecraft:iron_sword",
      "forgery_progress": 140,
      "ingredients": [
        { "count": 3, "item": "minecraft:diamond" },
        { "count": 1, "item": "minecraft:iron_ingot" },
        { "count": 2, "item": "minecraft:slime_ball" }
      ],
      "should_render_ingredients": true
    }
  ]
}