Metal Blocks (Stairs and Slabs)

Evidence

Ran on Kiln's test stand (2026-11-04): MetalSlabsStairs did not start: java.lang.NoClassDefFoundError: net/minecraft/world/level/block/StairBlock.

What it needs from Kiln

• Mixin
• net.minecraft.world.level.block.SlabBlock
• net.minecraft.world.level.block.StairBlock
• net.minecraft.world.level.block.state.BlockBehaviour.StatePredicate
• net.minecraft.world.level.block.state.properties.NoteBlockInstrument
• net.minecraft.world.level.block.state.properties.SlabType
• Blocks.AMETHYST_BLOCK
• Blocks.DIAMOND_BLOCK
• Blocks.EMERALD_BLOCK
• Blocks.GOLD_BLOCK
• Blocks.IRON_BLOCK
• Blocks.LAPIS_BLOCK
• Blocks.NETHERITE_BLOCK
• Blocks.REDSTONE_BLOCK
• Blocks.never()
• SoundType.AMETHYST
• SoundType.IRON
• SoundType.NETHERITE_BLOCK
• BlockBehaviour.Properties.instrument()
• BlockBehaviour.Properties.isRedstoneConductor()

On the roadmap: Code next to data (0.3), Mixin (0.5)

In the author's words

This Mod adds New Stair and Slabs for Metal Blocks (Iron, Gold etc).

Scan

Scanned on 4 November 2026 against Kiln 0.2.0, file metalss-1.1.1.jar. The scan reads the mod's classes; it does not run them.