diff --git a/Assets/VRM10/Editor/Components/SpringBone/VRM10SpringSelectorWindow.cs b/Assets/VRM10/Editor/Components/SpringBone/VRM10SpringSelectorWindow.cs
index def249c28..99a2aae3a 100644
--- a/Assets/VRM10/Editor/Components/SpringBone/VRM10SpringSelectorWindow.cs
+++ b/Assets/VRM10/Editor/Components/SpringBone/VRM10SpringSelectorWindow.cs
@@ -11,7 +11,7 @@ namespace UniVRM10
     {
         const string MENU_KEY = VRMVersion.MENU + "/SpringBone Window";
 
-        [MenuItem(MENU_KEY, false, 0)]
+        [MenuItem(MENU_KEY, false, 1)]
         private static void ExportFromMenu()
         {
             var window = (VRM10SpringSelectorWindow)GetWindow(typeof(VRM10SpringSelectorWindow));
diff --git a/Assets/VRM10/Editor/Vrm10ExportDialog.cs b/Assets/VRM10/Editor/Vrm10ExportDialog.cs
index 684ab000d..40cedcbb7 100644
--- a/Assets/VRM10/Editor/Vrm10ExportDialog.cs
+++ b/Assets/VRM10/Editor/Vrm10ExportDialog.cs
@@ -14,7 +14,7 @@ namespace UniVRM10
     {
         const string CONVERT_HUMANOID_KEY = VRMVersion.MENU + "/Export VRM-1.0";
 
-        [MenuItem(CONVERT_HUMANOID_KEY, false, 1)]
+        [MenuItem(CONVERT_HUMANOID_KEY, false, 0)]
         private static void ExportFromMenu()
         {
             var window = (VRM10ExportDialog)GetWindow(typeof(VRM10ExportDialog));
@@ -284,13 +284,13 @@ namespace UniVRM10
                 var converter = new UniVRM10.RuntimeVrmConverter();
                 var model = converter.ToModelFrom10(root);
 
-                // if (MeshUtility.Validators.HumanoidValidator.HasRotationOrScale(root))
-                // {
-                //     // 正規化
-                //     m_logLabel += $"normalize...\n";
-                //     var modifier = new ModelModifier(model);
-                //     modifier.SkinningBake();
-                // }
+                if (HumanoidValidator.HasRotationOrScale(root))
+                {
+                    // 正規化
+                    m_logLabel += $"normalize...\n";
+                    var modifier = new ModelModifier(model);
+                    modifier.SkinningBake();
+                }
 
                 // 右手系に変換
                 m_logLabel += $"convert to right handed coordinate...\n";
diff --git a/Assets/VRM10/vrmlib/Runtime/ModelExtensions.cs b/Assets/VRM10/vrmlib/Runtime/ModelExtensions.cs
index bb5b94a24..ced910626 100644
--- a/Assets/VRM10/vrmlib/Runtime/ModelExtensions.cs
+++ b/Assets/VRM10/vrmlib/Runtime/ModelExtensions.cs
@@ -72,6 +72,6 @@ namespace VrmLib
             CheckIndex(model.Skins, nameof(model.Skins));
             CheckIndex(model.MeshGroups, nameof(model.MeshGroups));
             CheckIndex(model.Animations, nameof(model.Animations));
-        }
+        }       
     }
 }
diff --git a/Assets/VRM10/vrmlib/Runtime/ModelModifierExtensions.cs b/Assets/VRM10/vrmlib/Runtime/ModelModifierExtensions.cs
new file mode 100644
index 000000000..852bdf9f7
--- /dev/null
+++ b/Assets/VRM10/vrmlib/Runtime/ModelModifierExtensions.cs
@@ -0,0 +1,81 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Numerics;
+
+namespace VrmLib
+{
+    public static class ModelModifierExtensions
+    {
+        public static string SkinningBake(this ModelModifier modifier)
+        {
+            foreach (var node in modifier.Model.Nodes)
+            {
+                var meshGroup = node.MeshGroup;
+                if (meshGroup == null)
+                {
+                    continue;
+                }
+
+                if (meshGroup.Skin != null)
+                {
+                    // 正規化されていれば1つしかない
+                    // されていないと Primitive の数だけある
+                    foreach (var mesh in meshGroup.Meshes)
+                    {
+                        {
+                            // Skinningの出力先を自身にすることでBakeする
+                            meshGroup.Skin.Skinning(mesh.VertexBuffer);
+                        }
+
+                        //　morphのPositionは相対値が入っているはずなので、手を加えない（正規化されていない場合、二重に補正が掛かる）
+                        /*
+                                                foreach (var morph in mesh.MorphTargets)
+                                                {
+                                                    if (morph.VertexBuffer.Positions != null)
+                                                    {
+                                                        meshGroup.Skin.Skinning(morph.VertexBuffer);
+                                                    }
+                                                }
+                                                */
+                    }
+
+                    meshGroup.Skin.Root = null;
+                    meshGroup.Skin.InverseMatrices = null;
+                }
+                else
+                {
+                    foreach (var mesh in meshGroup.Meshes)
+                    {
+                        // nodeに対して疑似的にSkinningする
+                        // 回転と拡縮を適用し位置は適用しない
+                        mesh.ApplyRotationAndScaling(node.Matrix);
+                    }
+                }
+            }
+
+            // 回転・拡縮を除去する
+            modifier.Model.ApplyRotationAndScale();
+
+            // inverse matrix の再計算
+            foreach (var node in modifier.Model.Nodes)
+            {
+                var meshGroup = node.MeshGroup;
+                if (meshGroup == null)
+                {
+                    continue;
+                }
+
+                foreach (var mesh in meshGroup.Meshes)
+                {
+                    if (meshGroup.Skin != null)
+                    {
+                        meshGroup.Skin.CalcInverseMatrices();
+                    }
+                }
+            }
+
+            return "SkinningBake";
+        }
+    }
+}
diff --git a/Assets/VRM10/vrmlib/Runtime/ModelModifierExtensions.cs.meta b/Assets/VRM10/vrmlib/Runtime/ModelModifierExtensions.cs.meta
new file mode 100644
index 000000000..b5a46a790
--- /dev/null
+++ b/Assets/VRM10/vrmlib/Runtime/ModelModifierExtensions.cs.meta
@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: 54fd566dc84b51643886ce8858a671db
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
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