Carbon Fiber: Concrete Jungle sources and upgrade costs
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Gather Carbon Fiber in the Concrete Jungle in Gridfall. Sources include Lockbox Hammer, Pile of Cars and Residential Artifact. The Art of Letting Go also rewards three Carbon Fiber; a refining recipe is not required for that reward.
Sources and quantities
| Source | Listed Carbon Fiber yield |
|---|---|
| Lockbox Hammer | 1–2 |
| Pile of Cars | 1–3 |
| Residential Artifact | 1 |
| The Art of Letting Go | 3 as a quest reward |
The gathering ranges describe the source’s output, not a guaranteed number of drops per minute. Check the actual node’s tool prompt before heading out; a list of material sources does not mean every salvage pile in Gridfall contains Fiber.
Decide what to reserve
Collector Rod Lv.2 needs five Carbon Fiber. A Hydrofarm needs three. Building both from no existing stock therefore needs eight Fiber, alongside their separate Vines, Magnets, Circuit Boards and Glass.
The rod also consumes your previous Collector Rod and requires Fluffy and Squishy research. The Hydrofarm changes your watering work but has its own Project Station Lv.3 gate. See rod requirements and farm structures before spending the same stock on optional decorations.
Recycling supplies
Some finished items return Carbon Fiber through the Recycler, including Gamer furniture and Tech clothing. Inspect the selected item’s return list and quantity before consuming it. Crafting an item first is not automatically a cheaper way to obtain one of its ingredients; include the original construction payment in that comparison.
The crafting planner subtracts owned Fiber from a selected recipe. It does not assume a particular gathering rate or recycle every eligible item in your inventory.
