Version 3.0

Fully compatible with 1.20.5.

Upgrading items with custom attribute data will not update values, so I highly recommend using Item Builder or another solution to change attributes like the built-in trim upgrading, to keep the vanilla values upgrade working. (That is, unless you don't want vanilla values and don't want it to change.)

Check out this showcase to give you an idea of what it can do!

Transmocrafter

Welcome to TransmoCrafter, a datapack that makes the smithing table a true tool for progression.

With it, armor pieces and tools can be upgraded to superior tiers using the corresponding template and tier material. It also allows transmografting, changing the shape of the item by using another piece of the same type(armor or tools) and tier as template. You finally have access to a sweep of engraving runes(trim patterns) for bonus stats on all your gear with sick looks!

What for, you ask? That's because smithing keeps the custom data of the first item, allowing you to shape your gear better to suit your needs, while costing materials. Using this, you have scrolls with specific ranges of gear they can be applied to. Finally you can break down any item using nether stars, which can then be applied to any type of gear.

You can use a costlier version of brewing as well, with ingredients as base (also accepts potions), a potion tier material, and the corresponding template for the potion type. By default, only potions with effect data will give working potions, but you can add any effect data to items to make them work, go wild!

To make it more relevant, the smithing table recipe was changed from requiring iron ingots to any stone type(cobblestone, blackstone, cobbled deepslate). The existing netherite recipes were not changed but a recipe was added to craft the template using 1 netherite ingot, 4 diamonds, and 4 netherrack. Some recipes were disabled for a baseline balance like trim pattern duplication(engraving) or the anvil.

If you only want a feature without another, simply delete/change the files accordingly. Chain blocks had their loot table removed for building comfort, you can readd it as needed.

It has advancements explaining it all in-game for easier playability.

Tier Material

Each recipe uses a tier material according to the smithing template, there are 10 tiers:

Wooden = Any Wood Planks
Leather = Leather
Stone = Any Cobblestone
Golden = Gold Ingot
Chainmail = Chain
Iron = Iron Ingot
Diamond = Diamond
Netherite = Netherite Ingot
Nether Star = Soul Sand
Potion = Blaze Powder

Transmocrafting

Chain + Leather Armor + Tier Material
Gold Ingot + Leather Armor + Tier Material
Iron Ingot + Chainmail Armor + Tier Material
Diamond + Iron Armor + Tier Material
Turtle Scute + Iron Helmet + Tier Material
Netherite Template + Diamond Armor + Tier Material
Any Cobblestone + Wooden Tools + Tier Material
Gold Ingot + Stone Tools + Tier Material
Iron Ingot + Stone Tools + Tier Material
Diamond + Iron Tools + Tier Material
Flint + Iron Tools + Tier Material
Heart of the Sea + Diamond Tools + Tier Material
Netherite Template + Diamond Tools + Tier Material
Iron Ingot + Shield + Tier Material
Iron Ingot + Wheat Seeds + Tier Material

Engraving

Any Rune + Any Gear + Any Trim Material

Transmografting

Any Tier Tools + Same Tier Tools + Tier Material
Any Tier Armor + Same Tier Armor + Tier Material
Bow + Crossbow (vice versa) + Tier Material

Stardust Forging

Nether Star + Any Gear + Tier Material
Any Gear + Nether Star + Tier Material

Inscribing

Armor + Flower Scroll + Tier Material
Tools + Skull Scroll + Tier Material
Bow/Crossbow + Creeper Scroll + Tier Material
Shield + Mojang Scroll + Tier Material
Golden Armor or Tools + Piglin Scroll + Tier Material
Any Gear + Globe Scroll + Tier Material

Imbibing

Nether Wart + Ingredients + Tier Material
Gunpowder + Ingredients + Tier Material
Dragon's Breath + Ingredients + Tier Material