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Split Bone

jenki258 edited this page Aug 23, 2026 · 3 revisions

Split Bone

#BioForge #BioForge_V2_0 #Build_V0_54T #Item #Bone #LegacyUpdated

Registry ID: bioforge:split_bone.

#Bones Split Bone is a bone fragment obtained from skeletons (and other entities tagged as skeleton_blood_sources) using the Bone Saw. It contains the blood data (type, amount, source) of the entity it was taken from. Split Bone cannot be used directly with reagents; it must first be processed into Bone Marrow via the Centrifuge.

Obtaining

  • Tool required: Bone Saw
  • Source entities: Any entity in the skeleton_blood_sources tag (default: minecraft:skeleton, minecraft:stray, minecraft:skeleton_horse).
  • Process: Attack the entity with a Bone Saw. On successful hit:
    • The target loses 10 blood points.
    • A Split Bone item is added to your inventory (or dropped on the ground if full).
    • The Bone Saw loses 1 durability and goes on cooldown (80 ticks / 4 seconds).

Properties

  • Stacks to: 1.
  • Contains: Obfuscated NBT data storing:
    • Blood amount
    • Blood type (e.g., A+, O-, Animal)
    • Source name (entity’s display name)
    • Source UUID

Tooltip

  • If containing blood:
    • Contains raw split marrow (dark gray)
    • (No blood type shown - requires processing to Bone Marrow first)
  • If empty (no blood data):
    • No marrow sample (dark gray)

Processing

Split Bone must be processed in a Centrifuge to become usable with reagents.

Relation to Withered Split Bone

  • Withered Split Bone is obtained from wither skeletons (and entities in withered_skeleton_blood_sources). It has a different processing path: it requires Decalcification Fluid to become Withered Bone Marrow, not the Centrifuge.

Notes

  • Split Bone cannot be used directly with reagents (the code in ReagentVialItem only accepts NeedleItem, BoneMarrowItem, and WitheredBoneMarrowItem - not SplitBoneItem).
  • The blood data is obfuscated using NbtObfuscator.
  • If you have a Split Bone, you must process it in a Centrifuge before you can test its blood type.

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