- Sandustry cinder comes from combining ash with purified slag.
- Cinder reserves can support a lava generator when the factory needs more fuel.
- Ash is washed into mulch, then shaken into burnt slag and gold.
- Purified slag should be routed carefully to avoid steam and liquid backups.
- Red sand is the final output of the full refinement loop.
Sandustry cinder: What It Does in the Factory
Cinder is a support resource in Sandustry cinder production chains. It is made by combining ash with purified slag, then used as an input for a lava-generating setup. That lava can power a dedicated refinement area and reduce the need to manually manage every stage of the factory.
The most useful way to think about cinder is as a reserve fuel rather than a normal end product. A small supply helps start the lava system, while a larger reserve gives the factory room to recover from clogged conveyors, misplaced filters, or uneven material flow.
Video Highlights:
- A refinement factory uses ash and purified slag to create cinder.
- Cinder can be stored as a strategic reserve for lava production.
- The broader loop converts raw materials into red sand through several connected stages.
- Filters, launchers, conveyors, pumps, and haulers each control a different part of the process.
| Resource | Main role | Recommended handling |
|---|---|---|
| Ash | Ingredient for mulch and cinder | Store some before routing all of it to washers |
| Purified slag | Ingredient for cinder and input to the slag press | Reserve a portion for cinder production |
| Cinder | Lava-generator fuel | Keep a protected reserve near the lava system |
| Lava | Heat source for melting operations | Prevent overflow near conveyors and processing blocks |
| Red sand | Final refinement output | Route into a dedicated storage box |
The most stable layout separates the cinder mixer from the main ash-processing line. This prevents a temporary shortage of cinder from stopping the washer and shaker chain. It also makes it easier to inspect the reserve without interrupting the factory.
Fuel Reserve
Keep extra cinder in a dedicated chamber. This gives the lava system material to recover after interruptions.
Loop Support
Cinder helps maintain lava production, allowing the refinement chain to continue processing ash and slag.
Failure Buffer
A reserve protects the factory from short-term filter mistakes, blocked lines, or uneven material flow.
Place the cinder reserve beside the lava generator, but keep it isolated from unrelated conveyors. A compact reserve is easier to refill and less likely to receive unwanted materials.
Cinder Recipe and Material Flow
The cinder recipe is straightforward: combine ash with purified slag. The difficult part is not the recipe itself, but maintaining both ingredients without starving the rest of the refinement loop.
Ash begins with the combustion stage. Pattalium or amethyllis is burned to create ash. The ash then enters a washer and becomes mulch. Mulch moves through a shaker, producing burnt slag and gold. Burnt slag is melted, mixed with water, and converted into purified slag. A portion of that purified slag can be diverted back into the cinder mixer.
| Production stage | Input | Output | Routing priority |
|---|---|---|---|
| Combustion | Pattalium or amethyllis | Ash | High |
| Washing | Ash and water | Mulch | High |
| Shaking | Mulch | Burnt slag and gold | High |
| Melting | Burnt slag and heat | Molten slag | High |
| Purification | Molten slag and water | Purified slag | High |
| Cinder mixing | Ash and purified slag | Cinder | Reserve only |
Use filters to make every branch explicit. An allow-only ash filter keeps the cinder input clean, while a separate purified slag filter prevents unrelated materials from entering the mixer. This matters because a cinder chamber can become difficult to diagnose when excess mulch, water, or slag enters the same area.
Do not divert every piece of purified slag into cinder. The kinetic slag press also needs purified slag to create rust, so reserve only the amount needed to keep your lava system supplied.
A practical split is to send most ash through the washer while manually or mechanically diverting a smaller portion to cinder production. The exact amount depends on factory speed, storage capacity, and how often the lava system consumes fuel.
Material priority
When the factory is starting, prioritize these materials in order:
- Cinder for initial lava production
- Ash for the washer and cinder mixer
- Purified slag for the cinder mixer and kinetic slag press
- Rust and polluted water for the red sand branch
- Gold storage or disposal
This priority prevents the common problem of building a beautiful downstream system that cannot start because the lava generator has no fuel.
| Priority | Material | Why it matters |
|---|---|---|
| 1 | Cinder | Starts or restores the lava supply |
| 2 | Ash | Feeds both mulch production and cinder creation |
| 3 | Purified slag | Supports cinder and rust production |
| 4 | Water | Required for washing and slag purification |
| 5 | Sand | Combines with polluted water to produce red sand |
Once ash and purified slag reach the mixer consistently, cinder production becomes a repeatable support loop instead of a one-time manual task.
Step-by-Step Cinder Factory Setup
Follow these steps to build a reliable cinder branch without disrupting the rest of the refinement factory.
Create a Dedicated Cinder Chamber
Build a small enclosed storage or mixing area near the lava generator. Add an allow-only cinder filter so finished cinder enters the correct reserve instead of drifting into another production line.
Route Ash to Two Destinations
Send most ash toward the washer, but create a controlled side route for cinder production. Use a filter that allows only ash into the mixing chamber.
Produce Purified Slag
Process burnt slag through a melter and water system. Keep the steam path separate from the purified slag route so liquid and gas do not obstruct the next stage.
Combine the Ingredients
Deliver ash and purified slag into the same cinder mixing chamber. Keep the chamber compact, and leave enough room for a hauler or grabber to correct small routing errors.
Feed the Lava Generator
Move finished cinder into the lava generator. Let the generator fill its internal reserve before sending excess lava into the wider factory.
The lava generator works best when its internal storage fills before the larger factory receives the remaining lava. This reduces unnecessary fuel consumption and gives the system a buffer during periods of uneven cinder production.
A larger grabber is useful during setup because cinder, ash, and purified slag may need to be moved manually while filters and conveyors are being tested. After the line is stable, haulers can handle longer transfers, especially for polluted water and other materials that cannot use ordinary conveyor routing.
| Component | Placement goal | Common mistake |
|---|---|---|
| Cinder filter | At the reserve entrance | Allowing mixed materials into storage |
| Ash filter | Before the cinder mixer | Sending all ash away to the washer |
| Slag filter | Before the cinder mixer and press | Diverting all purified slag to one branch |
| Melter | Near the heat source | Leaving no room for steam control |
| Hauler | Between distant liquid or storage areas | Making routes longer than necessary |
Test each branch separately. First confirm cinder production, then confirm lava generation, and only afterward connect the lava output to the larger refinement network.
Avoiding Steam, Water, and Overflow Problems
Liquid management is one of the most important parts of a cinder-supported factory. Molten slag becomes purified slag after water is added, while rust combines with water to create polluted water. These systems can share a general water supply, but their outputs should remain clearly separated.
Steam can become a problem when a melter is placed too close to a water line or when the output path is lower than expected. Keep the steam conversion area away from the purified slag conveyor. If steam reaches the wrong section, it can obstruct material flow and force manual cleanup.
Recommended liquid layout
- Place water tanks above or beside the washers and slag processors.
- Use dedicated pumps for lower processing chambers.
- Keep polluted water collection separate from clean water storage.
- Use haulers for polluted water when conveyor routing is unavailable.
- Leave vertical space between melters and water conversion points.
- Inspect filters after every major layout change.
| Liquid or gas | Created by | Used for | Control method |
|---|---|---|---|
| Water | Steam conversion or tank supply | Washing and slag purification | Pumps, vents, pipes |
| Steam | Melting operations | Converts back into water | Vertical separation |
| Polluted water | Rust plus water | Red sand production | Haulers and sealed chambers |
| Lava | Cinder-powered generator | Melting and heat production | Storage chamber and filters |
The red sand branch depends on polluted water and sand. Once polluted water is available, use haulers to move it to the sand mixer. Keep the mixer close to the polluted water output when possible; long hauler routes can make the final branch appear stalled even when all upstream machines are working.
If purified slag or water appears trapped near a melter, inspect the elevation and output filter before adding more machines. A higher conveyor or a separate steam path may solve the blockage.
The most reliable troubleshooting method is to pause expansion and inspect the factory from left to right:
- Is the burner producing ash?
- Is ash entering the washer?
- Is mulch reaching the shaker?
- Is burnt slag reaching the melter?
- Is purified slag leaving the water chamber?
- Is some purified slag reaching the cinder mixer?
- Is cinder entering the reserve?
- Is lava reaching the intended processing area?
Leave open space around melters, pumps, and water lines. Compact construction saves blocks early, but extra room makes steam and liquid problems much easier to correct.
Cinder Factory Checklist and Efficiency Tips
Use the checklist below before treating the cinder branch as stable. The goal is not maximum machine count; it is predictable flow with enough reserve capacity to recover from mistakes.
Cinder Factory Milestones:
- Build a dedicated cinder reserve beside the lava generator
- Route ash to both the washer and cinder mixer
- Reserve purified slag for cinder without stopping the kinetic slag press
- Separate steam, clean water, and polluted water paths
- Test the red sand output after the cinder-supported loop is running
Compact Layout
Best for early factories. Keep the mixer, reserve, and lava generator close together.
Split Layout
Separates combustion, washing, and slag processing for easier troubleshooting.
Reserve-First Layout
Builds extra cinder storage before connecting lava to the full factory.
Expansion Layout
Leaves open space for additional industry or refinement machines later.
Efficiency tips
- Keep a strategic cinder reserve instead of consuming every batch immediately.
- Use allow-only filters at every material handoff.
- Store extra ash when the washer is full or temporarily blocked.
- Keep gold out of the main production route if it is not needed.
- Build the polluted water mixer near the hauler routes.
- Avoid placing a melter directly beside a water conversion point.
- Expand storage before expanding the number of burners.
- Recheck filter direction after copying or moving machines.
| Problem | Likely cause | Recommended fix |
|---|---|---|
| No cinder | Ash or purified slag is missing | Check both input filters and storage |
| Lava stops | Cinder reserve is empty | Divert more ash or purified slag temporarily |
| Washer stalls | Water path is blocked | Inspect pumps, vents, and output elevation |
| Slag press stalls | Purified slag is diverted elsewhere | Reduce the cinder branch allocation |
| Red sand stops | Polluted water or sand is missing | Check hauler routes and the mixer chamber |
Treat cinder as infrastructure. A reserve that is slightly larger than immediate demand gives the factory time to recover without rebuilding the entire refinement chain.
Sandustry Cinder FAQ
Q: How do you make cinder in Sandustry?
Combine ash with purified slag in a dedicated mixing area. Use filters to keep both ingredients separate from the main production lines before they enter the cinder chamber.
Q: What is cinder used for?
Cinder is used as fuel for a lava-generating setup. The resulting lava can support melting operations in a larger refinement factory.
Q: Should all purified slag go into cinder production?
No. Purified slag also supports the kinetic slag press and the rust branch. Reserve only enough for cinder to keep the lava system supplied without starving downstream production.
Q: How can I prevent cinder production from breaking?
Maintain a protected reserve, separate steam and water paths, use allow-only filters, and test the ash, purified slag, cinder, and lava stages one at a time.
A good cinder setup is a controlled support loop: ash and purified slag enter a protected mixer, cinder fills a reserve, and lava powers the refinement stages that eventually produce red sand.