Scrap Mechanic split stack guide

How to Split Stacks in Scrap Mechanic

How to split stacks in Scrap Mechanic (PC): right-click item → Split → enter amount. Step-by-step for warehouse loot and co-op handoffs.

Official Axolot overview — inventory, tools, and Survival habits that make split-stack discipline stick.

~5 min read

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At A Glance

scrap mechanic split stack searches spike when Survival players hit inventory chaos: one giant tomato stack, one giant Component Kit pile, and no clean way to leave half at home for a corpse recovery. Scrap Mechanic inventory from Axolot Games (Steam 387990) rewards deliberate splits before farming, packing, and warehouse loops.

This page covers the split workflow, when to do it, how warehouse loot should be partitioned, and how co-op handoffs stop “who has the keycard?” disasters. Pair with controls for inventory binds, warehouse guide for loot priorities, and deposit tomatoes guide for packing crates. Verified August 16, 2026 · Steam.

Scrap Mechanic looting crash ship starter tools
FactDetail
IntentInventory split / stack management
Best momentsPre-warehouse, pre-packing, pre-co-op handoff
Key bind helpControls guide
RelatedWarehouse · Farming · Crafting
ModesSurvival · Creative · Challenge

Why split stacks matter in Survival

A full stack feels efficient until you die. Then every Component Kit, seed, and tomato crate sits on a corpse halfway across a Tapebot warehouse. Splitting is insurance: half travels, half stays at the bed / Craftbot.

Splits also clarify intent. Travel food is not packing cargo. Warehouse seed finds are not raid-defense ammo. Mixing everything into one hotbar is how players deposit the wrong crates at the Packing Station.

Scrap Mechanic Craftbot recipe queue

Three bins that always help

Combat bin — Spud Gun ammo, repair blocks, bearings. Food bin — cooked snacks + water for the trip only. Progression bin — Component Kits, seeds, schematic-related parts headed home.

Why GSC mixed this with warehouse

Warehouse pages currently absorb split-stack impressions because loot overload happens there first. Dedicated split discipline belongs here; warehouse combat belongs on the warehouse guide. For wonk stack / cap questions see the wonk stack guide.

How to split item stacks efficiently

Exact click chords can vary after patches — always verify in Settings → Controls and the inventory UI. The workflow below is the durable part: decide the split size before you leave, not while Tapebots are shooting.

Scrap Mechanic warehouse loot room
  • Do01Home cache chest exists next to the bed
  • Do02Travel food split off from bulk produce
  • Do03Component Kits never 100% on your corpse risk
  • Do04Hotbar reserved for weapons / tools, not crates
  • Do05Vehicle storage assigned a single loot job

Practical workflow

1. Stand at the Mechanic Station bed with Craftbot access.

2. Open inventory and identify stacks you cannot afford to lose entirely (kits, rare seeds, food).

3. Split each critical stack into travel portion + home cache.

4. Move home cache into a labeled chest / storage block near the bed.

5. Load only travel portions into the vehicle.

6. After a safe return, merge leftovers and re-split for the next goal.

Hotbar vs backpack

Hotbar holds what you will use in the next five minutes. Backpack / vehicle storage holds the rest. If your hotbar is full of tomato crates, you will not swap to Spud Gun fast enough in a raid — see controls for hotbar slot habits.

Vehicle storage as a third split

Treat the car as a mobile third bin: warehouse loot goes into vehicle crates; personal emergency food stays on your character. If the car flips, you still walk home with snacks.

When stack splits matter most

Not every inventory open needs a ceremony. These moments do.

Scrap Mechanic crop harvest and produce crates
MomentSplit forLeave at home
Packing Station tomato runOne vehicle load of produceExtra food + tools for corpse recovery
First warehouse clearAmmo + repair + empty slotsRare seeds already unlocked
Long map scoutFood + beacon materialsBulk Component Kits
Co-op role swapRole-specific tools onlyPartner’s assigned loot type
Chapter 2 mine diveLight combat kit + lamps/powerSurface farm surplus

Before deposit tomatoes

If packing crates and snack tomatoes share one mega-stack, you will eat the packing cargo or deposit the snacks. Split first — then follow deposit tomatoes guide.

Before schematic / crafting loops

Keep schematic-related parts and Component Kits in separate bins so Craftbot queues stay intentional. See schematic bot location and crafting guide.

Warehouse inventory discipline

Warehouses end more runs with full inventories than with empty health bars. Enter with empty slots. Exit with sorted piles — not a single unsorted blob.

Scrap Mechanic multi-floor warehouse layout

Priority split after loot

While still inside a cleared room (not while Tapebots respawn): seeds → Component Kits → weapon parts → junk. Drop junk if slots run out. The warehouse guide loot section lists seed floors.

Two-trip rule

If the vault is fat, make two trips. Physics will punish a top-heavy truck faster than a Tapebot will. Split loot across trips the same way you split stacks at home.

Keycards are not stacking junk

Keep keycards in a reserved slot until the matching door opens. Do not bury them under tomato crates from a previous packing run.

Tune your inventory route

Matched by build plan, shared topics, and guide progression — not random related links.

Co-op handoff and split stacks

Co-op multiplies inventory bugs. Without splits, two players both carry “some kits” and neither can craft the Spud Gun upgrade.

Scrap Mechanic mobile base with portable Craft Bot

Role bags

Driver bag: repair blocks, bearings, mounted gun ammo. Runner bag: empty slots, keycards, seed priority. Quartermaster at base: Craftbot queues and home caches.

Voice checklist before leaving

Call stack sizes out loud: “I have 20 kits travel / 40 kits home.” Ambiguity causes double-spending and empty Craftbots.

Discord LFG tip

When posting LFG on Discord, mention who handles inventory quartermaster duty — warehouse clears go faster when one person owns the split rules.

Scrap Mechanic split stack FAQ

How do you split stacks in Scrap Mechanic?

On PC: open inventory → right-click the stack → choose Split → enter the amount (or drag half to another slot). Console players use the equivalent split prompt in the inventory UI. After Patch 1.0.5, re-check Settings → Controls if the chord changed. Then cache half at your bed and take only travel portions on warehouse runs.

How to split stacks in Scrap Mechanic on PC?

Same flow: inventory open → right-click stack → Split → confirm count. The controls guide lists hotbar and inventory binds if right-click opens a different menu.

Why should I split stacks before warehouses?

So a wipe does not delete 100% of Component Kits, seeds, and food. Empty slots also let you pick up vault loot without dropping keycards.

Do beginners need this?

Yes — even Day 2 runs benefit once you leave the crash site. Start with food + tool splits from the beginner guide stage.

Is split stack only for Survival?

Creative is more forgiving, but Survival is where corpse runs punish unsorted inventories.

What should never stay as one mega-stack?

Component Kits, rare seeds, keycards, and the only food supply for a long trip.

Related pages

Matched by build plan, shared topics, and guide progression — not random related links.

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