Ol'Foundry

One block. The Foundry smelts like a furnace, but faster with additionnal stuff.

Dripstone lava accelerator

Slag bricks and dripstone: put a slag bricks block between a lava source and a hanging dripstone tip above a cauldron. Lava drips through at 3× speed.

How it works

Any furnace fuel works. Speed depends on what you burn:

• Most fuels — 1×
• Coal / charcoal — 1.5×
• Magma cream — 2×
• Blaze rod — 3×

The Foundry also has a 4-bucket lava tank. Fill it and smelting doubles in speed — stacks with the fuel bonus, so a blaze rod with lava hits 6×. The tank drains while it works. Fill it by hand, via the bucket slot, or pipe lava in from the side.

Slag

Ore smelting drops slag as a byproduct. You can:

• Reprocess it for iron or gold nuggets (lava in the tank gives an extra roll)
• Craft it into slag bricks
• Burn it as fuel, or compost it

Other bits

• Experience banks until you pull the output, same as a vanilla furnace
• Hoppers work per face: top feeds input, sides take fuel and buckets, bottom pulls output and slag
• All recipes and byproduct chances are in JEI

Requirements

• Fabric Loader + Fabric API
• Minecraft 26.1.2
• JEI optional

Source: github.com/lucienmc/ol-foundry — MIT

Translations: English, Français, Deutsch, Español, Italiano, Polski, Português (Brasil), Русский, 简体中文, 日本語, 한국어 — PRs welcome.