OtakuSolutions API Reference

1. Neck Refinement

With the head mesh merged, you can now fill in the top of the Neck with weights.
Hierarchy: Neck → Neck_Seg + Twist bone (follows neck rotation).
Twist: Flood 1.0 — name varies by rig, identify by function.
Use Eyedropper to unify a loop of weights → Smooth.
Play the animation to verify neck and twist deformation.

2. Clavicle (Collarbone)

Clavicle_Seg layer + Mask.

Select Bone

Toolbar Select Bone (shortcut Q): select a bone in the SLS viewport and use gizmos (W=move / E=rotate / R=scale) to temporarily pose it and check deformation.
The DCC rig is not affected — this is a temporary pose in the SLS viewport only. Playback resets to the original pose.

Fixing Poor Weld Seams

If the armpit Weld is incomplete → switch to Vertex mode and manually select problem vertices → Set Weight / Smooth.
Root fix: Weld thoroughly in DCC before Attach (see ep05).

3. Upper Arm

UpperArm_Seg layer — Flood 1.0.
Shader ▾ Gray Shaded (key 5) + Screen mode to paint generously front and back.
Smooth only the boundary edges.
Mirror (Weight + Mask).

Shoulder interior detail:
- For armpit/shoulder junctions: use Multiply brush at low value, small radius for fine adjustments.
- Use Surface mode to paint precisely up to back-face edges.

4. Forearm

ForeArm_Seg layer.
After Masking, check elbow bend from the Top view.
Distribute joint-center weights with Set Weight 0.5 / 0.9, etc.
Use Select Bone to pose the elbow and adjust.

Handling topology limitations:
- Ideally the bone pivot aligns with an edge loop. When it doesn't, use Eyedropper + Vertex editing to get as close to natural as possible.

Checking for leftover Root weight:
- If Root is not in the Used list → all vertices are properly assigned (good).
- If Root is in Used → some vertices are unassigned → clean up with Eyedropper or Set Weight.

5. Mirror · Save

Mirror is based on the bind pose — works even if the current pose is asymmetrical.
Ctrl+S to save.