Solidified Fiber Board

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The Solidified Fiber Board is an upgrade material in Arknights, introduced alongside Episode 13.

Item description
A specialized fiber board, solidified in a mold. Used in a variety of strengthening projects.

A compound fiber board crafted through bespoke manufacturing. Exhibits outstanding functionality, both physically and chemically, coupled with a rarely-seen ease of processing. An irreplaceable part of many an industrial workflow.


A fiberboard made from Fuscous Fibers with a wide variety of functions, Solidified Fiber Boards are used for the skill Specialization training and Elite 2 promotion of certain Operators introduced from Episode 13 onwards.



Solidified Fiber Boards are available in:

  • Distinctions Store (sometimes) for 15 Distinction Certificate icon.png.
  • Headhunting Parametric Model Store for 75 Headhunting Parametric Model icon.png.

Operation drops

Operation Sanity Drop rate
13-5 24 Very Rare (~5.5%)


Product Material(s) LMD Morale Requires
Solidified Fiber Board.png
Fuscous Fiber.png
Polyester Pack.png
Orirock Cluster.png
300 4 Level 3 Workshop
Clear 13-5

See also