cloth-sim

Original：🇺🇸 English

Translated

Garment blockout, cloth simulation, pin groups, and bake to shape keys or caches for characters and props in Blender via MCP.

4installs

Sourcearjun988/blender-skills

Added on2026-11-09

NPX Install

npx skill4agent add arjun988/blender-skills cloth-sim

SKILL.md Content

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Cloth Sim

Garment blockout → sim → art-direct → bake. Stable pins. Engine-friendly caches/shape keys.

When to Use

Dresses, capes, coats, flags, banners
Character clothing that needs drape
Baking sim to shape keys or Alembic/USD caches
Pre-roll settling before animation export

Workflow

Garment mesh (quad-friendly) → Vertex groups (pin/collide)
  → Cloth modifier settings → Collision objects
  → Pre-roll settle → Sim pass → Art-direct fixes
  → Bake shape keys / cache → Cleanup → Export

Mesh Prep

Quads preferred; even density on deforming areas
Avoid long skinny triangles on folds
Apply scale before sim
Separate garment from body collider

Vertex Groups

Group	Purpose
`PIN_Cloth`	Anchors (waist, shoulders, collar)
`COL_Ignore`	Optional non-colliding regions
`STIFF_High`	Belts, seams that should resist stretch

Settings Starters

Look	Quality	Speed	Bending
Soft dress	8–12	1.0	Low
Stiff coat	5–8	1.0	Higher
Flag/cape	8–10	1.0–1.5	Low–mid

Tune mass and air viscosity for scale. Always run a settle pre-roll.

Bake Targets

Target	Use
Shape keys	Game poses / few frames
Alembic/USD	Cinematic caches
Armature weights	If converting to deform-only

Constraints

MUST DO

Apply scale; define pin groups before long sims
Collide against simplified body capsule/mesh
Art-direct after sim (sculpt/corrective keys)

MUST NOT DO

Sim hero cloth on ultra-dense sculpt meshes
Skip pre-roll (starts mid-air / exploding)
Export raw unstable caches

Reference Guide

Topic	Reference	Load When
Cloth Settings Presets	`references/cloth-settings-presets.md`	When needed
Pin And Collide	`references/pin-and-collide.md`	When needed
Bake Targets	`references/bake-targets.md`	When needed