Ol' Foundry
by lucienmc
Ol' Foundry is a Fabric block for smelting ore faster than a vanilla furnace, with fuel bonuses and a lava tank that drives the process.
What it does
The foundry block works like a blast furnace, but it is sped up by lava and accepts a different set of fuels. Most fuels burn for the standard time, coal and charcoal give a faster multiplier, magma cream gives 2 and blaze rods give 3, so the speed of a smelt depends on the fuel that is burning. Ore smelting also produces a slag byproduct, and slag can be crafted into slag bricks. Fuels such as compost also work in the block, following the usual furnace fuel rules.
The block has a built-in 4-bucket lava tank. Lava can be added by hand through a bucket slot or by pipe from the side, and the tank drains while smelting. Iron and gold nuggets are reprocessed in the foundry, and the lava tank gives an extra roll on those outputs. Experience is banked until the output is pulled, as with a vanilla furnace. Installation covers the server and each player's game. Files are published for Fabric 1.0.10 for 26.1.2, with Fabric API as the required dependency.
Key features
Lava-fed foundry block
A blast-furnace style block that smelts faster when lava is supplied through its tank.
Fuel speed multipliers
Coal and charcoal, magma cream and blaze rods each change the smelting speed by a fixed factor.
Slag byproduct
Ore smelting produces slag, which can be crafted into slag bricks.
Lava tank input
A 4-bucket tank accepts lava by bucket slot or pipe and drains as the foundry works.
Gallery
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Requirements
Dependencies declared by the latest file for each loader.
Required 1
How it compares
Sandstone Furnace is open source under the MIT License, with files for 26.2 on Fabric and client and server environment. Reinforced furnaces is also Fabric, client and server and MIT License, but it is not open source and its files target 26.1.2. Coal Chunk Loader is server-side only under the Apache License 2.0, with files for 1.21 – 26.2, so players join without installing it.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| Ol' Foundry | Fabric | 26.1.2 | Client and server | 2026-06-09 |
| Sandstone Furnace | Fabric | 26.2 | Client and server | 2026-08-13 |
| Reinforced furnaces | Fabric | 26.1.2 | Client and server | 2026-05-13 |
| Coal Chunk Loader | Fabric | 1.21 – 26.2 | Server-side only | 2026-07-15 |
Questions
Does Ol' Foundry require Fabric API?
Does Ol' Foundry have to run on both sides?
Which fuels make the foundry smelt faster?
In the catalog
Ol' Foundry is one of 8,499 Technology mods on ModsFinder, and one of 4,201 Technology mods for Fabric. 15,189 mods support Minecraft 26.1.2.
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What the author says
One block. The Foundry smelts like a furnace, but faster with additionnal stuff. 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…
Official listing
- Modrinth page
- modrinth.com/mod/olfoundry
- Owner
- lucienmc
- Published
- 2026-05-29
- Updated on Modrinth
- 2026-06-09
- Facts verified
- 2026-10-15