Recover rare tellurium from copper processing. Refine it into precision copper alloys, optical crystals and bismuth thermoelectrics. A small production chain with integrations for BZ, Space Age, Krastorio 2 and other material mods.
Mods introducing new content into the game.
Version: 0.1.11
Date: 2026-09-20
Bugfixes:
- Prefer enabled and earlier usable material sources over late recipes with matching names; reject inaccessible research, recycling, barrel emptying, matter routes and net-zero returns.
- Use actual bismuth production prerequisites instead of optional K2 enrichment; keep ordinary thermoelectrics independent of late argon and optical research.
- Preserve coal-reduction unlocks and thermal recipe inputs/output when those recipes are bypassed.
- Retain downstream alloy requirements when the power-regulator integration is bypassed or cannot be applied.
Compatibility:
- Allow the existing thermoelectric component recipe in electromagnetic plants and crystal growth in cryogenic plants, preserving the ordinary machine routes.
- Reuse existing unlocks for optional refining, recovery and rubber improvements without adding broad upstream research gates. Native K2 copper enrichment retains its processing prerequisite.
Locale:
- Explain recovery rarity and refining recipes; include selected source recipes and unlocks in optional diagnostics.
- Consolidate the current three-branch design and integration descriptions.
Version: 0.1.10
Date: 2026-09-20
Balancing:
- Batch Ashier scanners and spectroscopes: one optical crystal per twenty instruments, preserving all other costs and crafting time per item.
- Keep shared helium and carbon-dioxide lasers free of Tellurium to avoid an accidental K2 advanced science surcharge; laser turrets retain their direct crystal requirement.
- Batch HV power regulators: one tellurium copper per ten regulators, preserving upstream costs and time per item.
- Keep rare recovery rates and refining efficiency tiers unchanged.
Version: 0.1.9
Date: 2026-09-20
Compatibility:
- Adapt the single optical-crystal recipe to use two bismuth glass, or ordinary glass when available.
- Preserve the four-crystal yield, duration, water and tellurium dioxide costs; require the glass production technology.
- Ignore recycling, matter conversion and glass sources dependent on Tellurium optics; preserve the base recipe without a safe provider.
Version: 0.1.8
Date: 2026-09-20
Compatibility:
- Add optional tellurium-assisted synthetic rubber for BrimStuff: 33% more rubber with a 99% returned tellurium charge.
- Preserve source ingredients, waste, duration and machine category; unlock through existing polymer research.
- Exclude returned tellurium from productivity and disable automatic reverse recycling.
Version: 0.1.7
Date: 2026-09-20
Bugfixes:
- Read researched unlock effects from technology prototypes when the mod configuration changes.
Compatibility:
- Peroxide extraction now uses sulfuric acid and peroxide without a separate water input, allowing ordinary chemical plants.
- Reduce peroxide extraction to three residue per dioxide, giving it a distinct efficiency benefit over four-residue chloride extraction. Retain the eight-second duration and existing peroxide technology unlock.
Version: 0.1.6
Date: 2026-09-20
Locale:
- Give optional refining/recovery technologies distinct names and remove internal IDs from refining recipe names.
- Explain the residue-saving tradeoff in the peroxide extraction tooltip.
Balancing:
- Consolidate copper enrichment into the existing K2 recipe with residue recovery and 25% longer processing.
- Keep only processing, optics and thermoelectrics technologies; integrations use existing research.
Compatibility:
- Transfer satellite crystals into IntermediatesForYou satellite bodies while preserving the per-satellite cost.
- Use optical crystals in LasingAround helium lasers instead of charging their scanners and spectroscopes directly.
- Transfer laser turret crystals into carbon-dioxide lasers when consumed by the turret.
- Add optics research prerequisites to the component technologies and respect recipe bypasses.
Version: 0.1.5
Date: 2026-09-20
Bugfixes:
- Recognize mined graphite and its mining fluid instead of gating early reduction behind K2 matter technology.
Version: 0.1.4
Date: 2026-09-20
Balancing:
- Fold available heatsinks or cooling fans into the standard thermoelectric recipe, preserving solder and increasing output to six. Remove the duplicate cooling recipe.
Compatibility:
- Add explicit MetalsForYou load ordering and test profiles for its full 2.1 source collection, IntermediatesForYou and GasGasGases.
Version: 0.1.3
Date: 2026-09-20
Balancing:
- Adapt the standard thermoelectric recipe to available solder and substrate materials instead of keeping competing equal-yield recipes.
- Require the selected materials' production technologies before thermoelectrics.
Locale:
- Give the cooling-assembly recipe a readable name.
Version: 0.1.2
Date: 2026-09-20
Graphics:
- Added dedicated Peltier module artwork for thermoelectric components and research.
- Replaced the bismuth telluride battery placeholder with crystalline semiconductor wafers.
Version: 0.1.1
Date: 2026-09-20
Graphics:
- Added original tellurium metal and optical crystal item and technology icons.
- Replaced the blue science flask in tellurium processing and refining research.
Version: 0.1.0
Date: 2026-09-20
Major Features:
- Added tellurium recovery, refining, optics, alloy, and optional bismuth thermoelectric chains.
- Added compatibility hooks for the BZ family and related Factorio 2.1 material mods.