Cauldron
Automated ProcessingTier VI
The Cauldron is a tier-6 processing machine with a 3×3×2 footprint that runs 4 recipes (Philosopher's Stone (Alternate), Ruby (Alternate), Sapphire (Alternate) and Emerald (Alternate)). Building one costs 20 Bronze Ingot. It is unlocked by the Cauldron research at Tier VI.
“A traditional alchemy device that takes any three materials and refines them into one unknown material. Some old alchemists still insist on using it.”— in-game description
- Speed multiplier
- ×1
- Heat per second while running
- None
- Size in grid cells
- 3×3×2
- Belt and pipe ports, in/out
- 3/1 belt
- Recipes
- 4
- Unlocked at Alchemy Level
- Level VI
Recipes the Cauldron runs
4 recipes| Recipe | Inputs per batch | Output | Time | Heat |
|---|---|---|---|---|
| Emerald (Alternate)Alternate | Inputs1 Moonlit Soap + 1 Lapis Lazuli + 1 Fertile Catalyst | Output1.32/min | Time45.5 s | Heat144.3/s |
| Philosopher's Stone (Alternate)Alternate | Inputs1 Ruby + 1 Sapphire + 1 Emerald | Output1/min | Time1 min | Heat166.67/s |
| Ruby (Alternate)Alternate | Inputs1 Diamond + 1 Pure Gold Dust + 1 Resonant Catalyst | Output1.94/min | Time30.9 s | Heat101.34/s |
| Sapphire (Alternate)Alternate | Inputs1 Perfect Diamond + 1 World Tree Core + 1 Unstable Catalyst | Output1.57/min | Time38.2 s | Heat126.92/s |
Output is the main product per minute for one Cauldron, without research upgrades.
Build cost
Details
- Speed multiplier
- ×1
- Heat per second while running
- None
- Size in grid cells
- 3×3×2
- Belt and pipe ports, in/out
- 3/1 belt
- Recipes
- 4
- Unlocked at Alchemy Level
- Level VI
- Mirrored variant
- No
Unlocked by
- ResearchCauldronTier VI
Change history
- v0.5.4467Patch note2 Jun 2026
- “As part of this update, we have also adjusted some crafting recipes. And as a result, existing saves may experience issues such as certain devices no longer operating correctly, or changes to Cauldron outputs after updating.”
- “Previously, the Cauldron applied an additional multiplier when calculating output generation. This multiplier caused certain late-game products (such as Silver Powder and Resonant Catalyst) to be relatively easier to obtain than others, while also suppressing the generation chances of many other products. After further consideration, we decided to remove this multiplier entirely.”
- “In addition, because some crafting recipes have been adjusted, outputs from existing Cauldrons in old saves may change accordingly. Most early-game recipes should remain unaffected.”
- v0.4.4.4298Patch note15 Apr 2026
- “Cauldron: Previously, the Cauldron was designed as a powerful but risky device. However, we felt the chaos caused by accidently messing it up was too punishing. Therefore, we have added a Item Filtering feature to it.”
- v0.4.3.4131Patch note6 Mar 2026
- “Adjusted the building cost of the Cauldron: 30 Bronze Ingots → 20.”
Patch-note lines are quoted from the official notes. Exact data changes are tracked from v1.0.4962.
Generated from the v1.0.4962 game files. Rates assume base machine speed without research upgrades.
Report incorrect data