Blueprint Fragment
Damaged diagrams containing partial information, used to research Workbench Level 1 items on the tech tree. 10 Blueprint Fragments can be pieced together to make a Blueprint Page.
In Rust, 10 × Blueprint Fragment combine into 1 × Blueprint Page. It cannot be crafted, and Primitive Crate drops it most often, at 20%.
About the Blueprint Fragment
Brown Crate gives the biggest single find, 2 at a time. Gutting fish gives it too: Catfish (1, 20% of the time), Orange Roughy (1, 20% of the time), Salmon (1, 20% of the time) and 1 more. It stacks to 100 in one inventory slot.
In all, 7 loot sources drop it; the full list of where it drops gives the chance for each.
Turns into
Blueprint Page Combine 10×1— Comes from
Catfish
Orange Roughy
Salmon
Small SharkWhere to find the Blueprint Fragment
Primitive Crate has the best chance at 20%, followed by Primitive Jungle Crate at 20% and Brown Crate at 20%.
Stats checked against the Rust game files on 9 November 2026.
