- Priority splitter: Route scarce materials toward the production line that needs them most.
- Best placement: Install it after a buffer or shared input lane, not directly beside every machine.
- Main goal: Keep critical processors supplied while preventing secondary lines from taking everything.
- Setup rule: Test one input and two outputs before expanding the network.
Alchemy Factory priority splitter Basics
Alchemy Factory priority splitter setups are most useful when one resource stream must serve several machines, recipes, or production modules. Instead of allowing every output lane to compete equally, use the splitter to define which route receives material first and where overflow should go.
The system fits naturally into the game’s broader automation loop: gather resources, process them through machines, move them with conveyors or pipes, and deliver finished goods to the shop. A priority splitter does not replace storage or production planning. It gives you more control over a shared logistics route.
| Use Case | Recommended Priority | Why It Helps |
|---|---|---|
| One machine feeds a valuable recipe | Main recipe first | Protects scarce inputs for high-value production |
| Shared raw-material line | Stable processor first | Prevents idle machines and uneven supply |
| Finished goods routing | Shop output first | Keeps sales inventory moving consistently |
| Temporary overflow | Storage or buffer second | Captures excess materials without blocking the line |
Start with one priority output and one overflow output. Simple routing is easier to inspect, expand, and repair than a large network built all at once.
The priority route should usually serve the production stage that limits the entire chain. If a furnace, crucible, or advanced alchemical machine regularly waits for materials, give that route preference before adding more final-product machines.
Keep the splitter close enough to the shared input for easy maintenance, but leave room for a buffer, alternate lane, or future branch. Clear spacing matters because factories become harder to troubleshoot when conveyors, pipes, storage, and output routes cross repeatedly.
Priority Splitter Setup: Step-by-Step
Follow this setup sequence when adding a priority splitter to an existing production line. The method works for both a compact early factory and a larger modular layout.
Identify the Shared Input
Choose the resource or intermediate material that several machines are trying to consume. Check whether the problem is limited supply, slow processing, or poor routing before placing the splitter.
Choose the Primary Output
Select the machine or production module that should receive material first. Give priority to a bottleneck, a commission requirement, or a product line that supports your current shop plan.
Connect the Overflow Route
Send remaining material toward a secondary machine, storage buffer, or another production block. Avoid leaving overflow without a destination because unused output can create congestion.
Run a Controlled Test
Watch the line while the primary machine is active. Confirm that it receives material consistently and that the secondary route still receives supply when the main demand is satisfied.
Label and Expand Carefully
Mark the primary route, overflow route, and input source. If demand grows, duplicate the module or add capacity at the slowest stage instead of creating many unmarked branches.
| Test Point | Healthy Result | Warning Sign |
|---|---|---|
| Primary machine | Receives inputs at a steady rate | Frequently idle despite available resources |
| Overflow route | Receives extra supply when available | Always empty or constantly overloaded |
| Input buffer | Changes level gradually | Fills permanently or drains immediately |
| Output lane | Moves products away from the splitter | Items accumulate at the branch |
If the primary route remains empty, adding another splitter may not help. Inspect the input source, upstream processing speed, storage capacity, and transport direction first.
A priority splitter is a routing tool, not a substitute for balanced production. If the preferred machine consumes materials faster than the source can produce them, the line will remain underfed. Likewise, if the preferred machine is already full, the overflow route should be able to accept the remaining items.
Best Factory Layouts for Splitter Routing
The cleanest splitter designs use repeatable modules. Each module should have a defined input, a controlled branch, one or more processing stages, and a clear output. This structure makes it easier to copy a reliable layout for potions, jewelry, relics, or other sellable goods.
Compact Branch
Use one shared input, one priority output, and one storage overflow. Best for early production and short processing chains.
Parallel Processing
Feed two similar machines from a controlled branch. Give priority to the machine serving the most important bottleneck.
Modular Product Block
Route prepared ingredients into a dedicated product area. Keep the finished-goods exit separate from raw-material traffic.
| Layout | Splitter Position | Best For | Expansion Method |
|---|---|---|---|
| Straight line | Before the next machine | Simple recipes | Extend forward |
| Parallel block | Before matching processors | High-volume materials | Add a parallel machine |
| Central bus | Along a shared logistics lane | Several product lines | Add marked branches |
| Separated zones | Between processing and output areas | Large factories | Expand each zone independently |
Use a priority splitter after a shared storage point when multiple product lines depend on the same processed material. The buffer absorbs short interruptions and gives you a clearer view of whether the source or the downstream machines are causing the shortage.
For multi-input products, avoid routing every ingredient through one crowded junction. Give each ingredient its own lane where possible, then combine flows near the final production area. This reduces accidental backflow and makes missing-material problems easier to isolate.
Build one working splitter module, then duplicate its orientation. Reusable layouts reduce construction mistakes and leave more space for future conveyors, pipes, and machines.
Keep incoming resources and finished goods moving in different directions. A priority splitter cannot prevent congestion if the same narrow corridor carries raw materials into the factory and completed products back toward the shop.
Troubleshooting Priority Splitter Problems
Most routing problems can be diagnosed by following the material from source to destination. Check one stage at a time instead of rebuilding the entire production area.
Priority Splitter Inspection:
- Confirm the input lane is carrying the intended material
- Check that the preferred output points toward the correct machine
- Inspect whether the primary machine has storage or output space
- Verify that the overflow route has a valid destination
- Remove unnecessary crossings, loops, and blocked transport segments
| Symptom | Likely Cause | Practical Fix |
|---|---|---|
| Main machine is idle | Empty input or wrong branch | Trace the source and reconnect the preferred output |
| Secondary line starves | Priority consumes all supply | Increase input production or reduce secondary demand |
| Items stop at the splitter | Output blocked or misaligned | Clear the lane and check the destination connection |
| Buffer stays full | Downstream stage is too slow | Upgrade or duplicate the slowest processor |
| Products pile up | Output or shop route is blocked | Separate finished-goods logistics from incoming supply |
When a line is unstable, temporarily simplify it. Disconnect the secondary branch, confirm that the priority route works, then reconnect the overflow path. This isolates whether the issue comes from the splitter, the destination machine, or the wider logistics network.
Do not place a splitter immediately before every machine. Too many branches create unnecessary decisions and make it difficult to understand where material is being consumed. Use splitters at meaningful control points: shared inputs, bottleneck processors, major product modules, and storage exits.
Check direction first, destination second, machine capacity third, and resource production last. This order prevents unnecessary rebuilding when the problem is only a disconnected output.
For shop-focused factories, reserve a dedicated finished-product route. This keeps sales inventory supplied without allowing customer demand to pull raw materials away from active processing chains.
Priority Splitter Strategy and FAQ
A good splitter setup supports the whole factory rather than a single machine. Prioritize the chain that advances your current goal, maintain enough overflow capacity, and leave open space for later expansion.
Use the official Alchemy Factory Steam page for current game information, and check the Steam Community hub for player discussions and updates. The game also supports broader factory planning through conveyors, pipes, modular production, shop inventory, and later logistics systems.
| Factory Stage | Splitter Priority | Recommended Focus |
|---|---|---|
| Early | One reliable product line | Simple routing and easy maintenance |
| Mid | Bottleneck processing | Parallel machines and buffers |
| Late | Shared material networks | Modular branches and separated zones |
Use priority routing to protect important production, but keep the layout readable. A smaller system that you can inspect is usually stronger than a larger tangled network.
Q: What does the Alchemy Factory priority splitter do?
It controls how a shared material stream is distributed between output routes, allowing one production line to receive preference over another.
Q: Where should I place a priority splitter?
Place it after a shared input or buffer and before the production branches that compete for the same resource. Leave space for overflow and maintenance.
Q: Why is my priority machine still idle?
Check the input direction, destination connection, available machine storage, upstream processing speed, and whether another route is consuming the material first.
Q: Should every machine have its own splitter?
No. Use splitters at shared inputs, bottlenecks, product modules, and major logistics junctions. Too many branches make routing harder to read and maintain.