Ultimate Mining Tycoon Splitters and Belts Guide

Conveyors are not decoration in Ultimate Mining Tycoon — they are the nervous system of your 30+ machine factory. Innovation Inc.’s tycoon (madattak and Rolijok, place ID 18680867089, v0.5.13) counts every belt tile and splitter toward the 4,000 complexity cap. Misplaced routing causes jams that idle Super Crawler dumps and stall Power Core Assembler lines worth millions. This guide explains Splitter, Three-Way Splitter, and Overflow Splitter behavior (including v0.5.x overflow fixes), 1-to-2/3/4/5/10 schematics, and the straight-line philosophy from Factory Layout.

Pair with Machines Reference for processor costs and Factory Chain Reference for recipe order.

Belt fundamentals

Every factory item travels one tile per tick on conveyors unless blocked. Blocked items back up upstream until machines idle or the unloader overflows visually.

Core rules:

• Straight segments have the fewest failure points.
• 90° turns and long Connector chains are jam magnets — minimize them.
• Machine input/output ports must align; offset Stamper three tiles sideways guarantees bolt piles.
• After v0.5.7, spinning gears do not prove processing — trust item icons on belts.

Mid-game income dies when belts look busy but nothing reaches sell points — verify one ore end-to-end before long mining trips.

Splitter types

Build Shop support parts include standard splitters for parallel routing:

Part	Behavior (typical)
Splitter	Alternates or splits flow between two outputs
Three-Way Splitter	Divides flow across three lanes
Overflow Splitter	Sends items down primary lane until full, then overflow branch

Exact alternation timing matters less than downstream consumption rate — a splitter feeding two starved machines looks fine until one machine speeds up and steals 100% of items.

Overflow Splitter (v0.5.x behavior)

Overflow Splitter is the most important late-game routing tool. Patch v0.5.4 fixed blocking and random overflow bugs on sifters and overflow splitters; v0.5.8 added splitter state saving between sessions so factory reloads do not unbalance ratios.

Current community-tested behavior (v0.5.x):

• Primary (main) line is prioritized when clear — items flow straight through to your Power Core or sell spine first.
• When the main line backs up (machine full, sell clogged), surplus diverts to the overflow branch.
• Use overflow to dump stone byproducts, surplus glass, or ceramic casing without stopping Smelters (required since v0.5.0 stone clog rule).

Bad use: overflow into another jammed lane — you only moved the pile.

Good use: Smelter stone → overflow → sell point while metal continues main spine.

1-to-N schematics

Splitters scale to multi-output factories. Common configurations:

1-to-2

[Machine output] → [Splitter] → Branch A (primary process)
                              └→ Branch B (sell overflow / byproduct)

Use for Alloy Furnace dual inputs — split smelter output to both alloy mouths evenly. See Alloys and Tempering.

1-to-3 (Three-Way Splitter)

[Unloader] → [Three-Way] → Metal smelter spine
                         → Gem filter spine
                         → Overflow sell

Separate gems early — mixing gem and ore on one belt without filters causes mid-game chaos.

1-to-4 / 1-to-5

Late electronics often split coil outputs to multiple Magnetic Machine inputs or parallel Stamper banks. Only build when each branch has dedicated sell or process capacity — four hungry Stampers with one smelter starves three lanes.

1-to-10 (Power Core casing split)

Endgame Power Core Assembler needs metal casing, electromagnet, and superconductor converging at precise ratios. Community layouts use a 1-to-10 split on casing production while magnet and superconductor ride dedicated straight spines:

[Casing Machine] → [1-to-10 split] → Power Core Assembler inputs (×10 capacity pattern)
[Magnetic Machine] → straight spine ────────────────┘
[Superconductor Constructor] → straight spine ──────┘

Do not 1-to-10 split magnets and superconductors through the same maze — their craft rates differ. Feed each component on its own straight line, merge only at the assembler mouth. Full chain: Circuit and Electronics and Endgame Factory.

The embedded community distinction: casings benefit from wide fan-out because Power Core recipes consume many casing units relative to magnets in some layouts; magnets and superconductors jam if forced through identical split ratios.

Jam prevention checklist

Symptom	Likely cause	Fix
Bolts pile on corner	Tight 90° turn	Straighten or widen turn
One Alloy input empty	Uneven 1-to-2 split	Buffer belt or dedicated smelter per input
Smelter stopped	Stone not cleared	Overflow stone to sell
Circuit Maker idle	Glass/coils imbalanced	Fix stonework ratio, not more splitters
Power Core starved	Casing split without magnet feed	Separate spines per component
Full unloader, empty sell	Downstream jam miles away	Walk belt backward from sell point

Complexity cost of excess conveyors

Each belt tile and splitter consumes complexity. Decorative loops can waste 200–400 complexity — enough to block a Quality Assurance or Laser Maker install.

Audit habit before buying endgame machines:

1. Open complexity meter in build mode.
2. Delete any belt that does not move product toward sell or required input.
3. Replace connector detours with one splitter and one straight segment.
4. Leave 500+ headroom for patch additions and prestige machines.

Endgame plots targeting Power Core often sit at 2,800–3,500 complexity when built efficiently — see Machines Reference.

Straight-line philosophy

Top players repeat one mantra: straight to the point.

• Unloader → process chain → sell in one visual row when plot width allows.
• Branch sideways for gems and stonework, not diagonally through the main row.
• Elevators are acceptable for vertical returns (temper loops); horizontal connector spaghetti is not.
• When a YouTube layout uses 40 connector tiles, ask which three splitters replace them.

Factory Layout expands spatial discipline; this page covers when to split versus when to delete belts entirely.

Splitters with prestige machines

Post-prestige routing adds machines before the smelter:

[Unloader] → [Ore Upgrader] → [Philosopher's Stone] → Smelter spine…

Dust overflow → Nano Sifter → back into upgrader line. Use overflow splitters so sifter byproduct does not clog upgraded ore. Duplicator late paths compound split ratios — plan before placing 1-to-5 grids you cannot debug.

Details: Prestige Machines.

Patch notes that affect belts

Patch	Belt impact
v0.5.0	Smelter stops if stone not removed — overflow routing mandatory
v0.5.4	Overflow splitter blocking fixes
v0.5.7	Animations decoupled — verify belt icons
v0.5.8	Splitter state persists on factory load
v0.5.12	Immediate factory save — fewer ghost items on belts

Full list: Updates Hub.

Related pages

• Factory Layout — plot-wide design principles
• Endgame Factory — Power Core merge points
• Circuit and Electronics — dual-input Circuit Maker splits
• Machines Reference — support parts list
• Factory Chain Reference — recipe dependencies
• Updates Hub — splitter and smelter patch history

Splitters solve bottlenecks — they do not create them. Build straight, split only where byproducts or multi-input machines demand it, and delete every belt that exists “just because.”