diff --git a/dust3d.pro b/dust3d.pro
index ed421c31..3e748574 100644
--- a/dust3d.pro
+++ b/dust3d.pro
@@ -128,6 +128,9 @@ HEADERS += src/markiconcreator.h
 SOURCES += src/skeletonbonemark.cpp
 HEADERS += src/skeletonbonemark.h
 
+SOURCES += src/intermediateboneremover.cpp
+HEADERS += src/intermediateboneremover.h
+
 HEADERS += src/qtlightmapper.h
 
 SOURCES += src/main.cpp
diff --git a/src/gltffile.cpp b/src/gltffile.cpp
index 12070731..5b16e55d 100644
--- a/src/gltffile.cpp
+++ b/src/gltffile.cpp
@@ -17,8 +17,11 @@
 // http://quaternions.online/
 // https://en.m.wikipedia.org/wiki/Rotation_formalisms_in_three_dimensions?wprov=sfla1
 
+bool GLTFFileWriter::m_enableComment = false;
+
 GLTFFileWriter::GLTFFileWriter(MeshResultContext &resultContext, const QString &filename) :
-    m_filename(filename)
+    m_filename(filename),
+    m_outputNormal(true)
 {
     const BmeshNode *rootNode = resultContext.centerBmeshNode();
     if (!rootNode) {
@@ -107,6 +110,8 @@ GLTFFileWriter::GLTFFileWriter(MeshResultContext &resultContext, const QString &
     
     int bufferViewIndex = 0;
     
+    if (m_enableComment)
+        m_json["accessors"][bufferViewIndex]["__comment"] = QString("/accessors/%1: mat").arg(QString::number(bufferViewIndex)).toUtf8().constData();
     m_json["accessors"][bufferViewIndex]["bufferView"] = bufferViewIndex;
     m_json["accessors"][bufferViewIndex]["byteOffset"] = 0;
     m_json["accessors"][bufferViewIndex]["componentType"] = 5126;
@@ -140,12 +145,14 @@ GLTFFileWriter::GLTFFileWriter(MeshResultContext &resultContext, const QString &
         int bufferViewFromOffset;
         
         m_json["meshes"][0]["primitives"][primitiveIndex]["indices"] = bufferViewIndex;
-        m_json["meshes"][0]["primitives"][primitiveIndex]["attributes"]["POSITION"] = bufferViewIndex + 1;
-        m_json["meshes"][0]["primitives"][primitiveIndex]["attributes"]["NORMAL"] = bufferViewIndex + 2;
-        m_json["meshes"][0]["primitives"][primitiveIndex]["attributes"]["JOINTS_0"] = bufferViewIndex + 3;
-        m_json["meshes"][0]["primitives"][primitiveIndex]["attributes"]["WEIGHTS_0"] = bufferViewIndex + 4;
-        m_json["meshes"][0]["primitives"][primitiveIndex]["attributes"]["TEXCOORD_0"] = bufferViewIndex + 5;
         m_json["meshes"][0]["primitives"][primitiveIndex]["material"] = primitiveIndex;
+        int attributeIndex = 0;
+        m_json["meshes"][0]["primitives"][primitiveIndex]["attributes"]["POSITION"] = bufferViewIndex + (++attributeIndex);
+        if (m_outputNormal)
+            m_json["meshes"][0]["primitives"][primitiveIndex]["attributes"]["NORMAL"] = bufferViewIndex + (++attributeIndex);
+        m_json["meshes"][0]["primitives"][primitiveIndex]["attributes"]["JOINTS_0"] = bufferViewIndex + (++attributeIndex);
+        m_json["meshes"][0]["primitives"][primitiveIndex]["attributes"]["WEIGHTS_0"] = bufferViewIndex + (++attributeIndex);
+        m_json["meshes"][0]["primitives"][primitiveIndex]["attributes"]["TEXCOORD_0"] = bufferViewIndex + (++attributeIndex);
         /*
         m_json["materials"][primitiveIndex]["pbrMetallicRoughness"]["baseColorFactor"] = {
             part.second.color.redF(),
@@ -169,6 +176,8 @@ GLTFFileWriter::GLTFFileWriter(MeshResultContext &resultContext, const QString &
         m_json["bufferViews"][bufferViewIndex]["target"] = 34963;
         Q_ASSERT(part.second.triangles.size() * 3 * sizeof(quint16) == binaries.size() - bufferViewFromOffset);
         alignBinaries();
+        if (m_enableComment)
+            m_json["accessors"][bufferViewIndex]["__comment"] = QString("/accessors/%1: triangle indicies").arg(QString::number(bufferViewIndex)).toUtf8().constData();
         m_json["accessors"][bufferViewIndex]["bufferView"] = bufferViewIndex;
         m_json["accessors"][bufferViewIndex]["byteOffset"] = 0;
         m_json["accessors"][bufferViewIndex]["componentType"] = 5123;
@@ -204,7 +213,8 @@ GLTFFileWriter::GLTFFileWriter(MeshResultContext &resultContext, const QString &
         m_json["bufferViews"][bufferViewIndex]["byteLength"] =  part.second.vertices.size() * 3 * sizeof(float);
         m_json["bufferViews"][bufferViewIndex]["target"] = 34962;
         alignBinaries();
-        
+        if (m_enableComment)
+            m_json["accessors"][bufferViewIndex]["__comment"] = QString("/accessors/%1: xyz").arg(QString::number(bufferViewIndex)).toUtf8().constData();
         m_json["accessors"][bufferViewIndex]["bufferView"] = bufferViewIndex;
         m_json["accessors"][bufferViewIndex]["byteOffset"] = 0;
         m_json["accessors"][bufferViewIndex]["componentType"] = 5126;
@@ -214,23 +224,29 @@ GLTFFileWriter::GLTFFileWriter(MeshResultContext &resultContext, const QString &
         m_json["accessors"][bufferViewIndex]["min"] = {minX, minY, minZ};
         bufferViewIndex++;
         
-        bufferViewFromOffset = (int)binaries.size();
-        m_json["bufferViews"][bufferViewIndex]["buffer"] = 0;
-        m_json["bufferViews"][bufferViewIndex]["byteOffset"] = bufferViewFromOffset;
-        for (const auto &it: part.second.interpolatedVertexNormals) {
-            stream << (float)it.x() << (float)it.y() << (float)it.z();
+        if (m_outputNormal) {
+            bufferViewFromOffset = (int)binaries.size();
+            m_json["bufferViews"][bufferViewIndex]["buffer"] = 0;
+            m_json["bufferViews"][bufferViewIndex]["byteOffset"] = bufferViewFromOffset;
+            QStringList normalList;
+            for (const auto &it: part.second.interpolatedVertexNormals) {
+                stream << (float)it.x() << (float)it.y() << (float)it.z();
+                if (m_outputNormal)
+                    normalList.append(QString("<%1,%2,%3>").arg(QString::number(it.x())).arg(QString::number(it.y())).arg(QString::number(it.z())));
+            }
+            Q_ASSERT( part.second.interpolatedVertexNormals.size() * 3 * sizeof(float) == binaries.size() - bufferViewFromOffset);
+            m_json["bufferViews"][bufferViewIndex]["byteLength"] =  part.second.vertices.size() * 3 * sizeof(float);
+            m_json["bufferViews"][bufferViewIndex]["target"] = 34962;
+            alignBinaries();
+            if (m_enableComment)
+                m_json["accessors"][bufferViewIndex]["__comment"] = QString("/accessors/%1: normal %2").arg(QString::number(bufferViewIndex)).arg(normalList.join(" ")).toUtf8().constData();
+            m_json["accessors"][bufferViewIndex]["bufferView"] = bufferViewIndex;
+            m_json["accessors"][bufferViewIndex]["byteOffset"] = 0;
+            m_json["accessors"][bufferViewIndex]["componentType"] = 5126;
+            m_json["accessors"][bufferViewIndex]["count"] =  part.second.vertices.size();
+            m_json["accessors"][bufferViewIndex]["type"] = "VEC3";
+            bufferViewIndex++;
         }
-        Q_ASSERT( part.second.interpolatedVertexNormals.size() * 3 * sizeof(float) == binaries.size() - bufferViewFromOffset);
-        m_json["bufferViews"][bufferViewIndex]["byteLength"] =  part.second.vertices.size() * 3 * sizeof(float);
-        m_json["bufferViews"][bufferViewIndex]["target"] = 34962;
-        alignBinaries();
-        
-        m_json["accessors"][bufferViewIndex]["bufferView"] = bufferViewIndex;
-        m_json["accessors"][bufferViewIndex]["byteOffset"] = 0;
-        m_json["accessors"][bufferViewIndex]["componentType"] = 5126;
-        m_json["accessors"][bufferViewIndex]["count"] =  part.second.vertices.size();
-        m_json["accessors"][bufferViewIndex]["type"] = "VEC3";
-        bufferViewIndex++;
         
         bufferViewFromOffset = (int)binaries.size();
         m_json["bufferViews"][bufferViewIndex]["buffer"] = 0;
@@ -246,6 +262,8 @@ GLTFFileWriter::GLTFFileWriter(MeshResultContext &resultContext, const QString &
         }
         m_json["bufferViews"][bufferViewIndex]["byteLength"] = binaries.size() - bufferViewFromOffset;
         alignBinaries();
+        if (m_enableComment)
+            m_json["accessors"][bufferViewIndex]["__comment"] = QString("/accessors/%1: bone indicies").arg(QString::number(bufferViewIndex)).toUtf8().constData();
         m_json["accessors"][bufferViewIndex]["bufferView"] = bufferViewIndex;
         m_json["accessors"][bufferViewIndex]["byteOffset"] = 0;
         m_json["accessors"][bufferViewIndex]["componentType"] = 5123;
@@ -267,6 +285,8 @@ GLTFFileWriter::GLTFFileWriter(MeshResultContext &resultContext, const QString &
         }
         m_json["bufferViews"][bufferViewIndex]["byteLength"] = binaries.size() - bufferViewFromOffset;
         alignBinaries();
+        if (m_enableComment)
+            m_json["accessors"][bufferViewIndex]["__comment"] = QString("/accessors/%1: bone weights").arg(QString::number(bufferViewIndex)).toUtf8().constData();
         m_json["accessors"][bufferViewIndex]["bufferView"] = bufferViewIndex;
         m_json["accessors"][bufferViewIndex]["byteOffset"] = 0;
         m_json["accessors"][bufferViewIndex]["componentType"] = 5126;
@@ -282,6 +302,8 @@ GLTFFileWriter::GLTFFileWriter(MeshResultContext &resultContext, const QString &
         }
         m_json["bufferViews"][bufferViewIndex]["byteLength"] = binaries.size() - bufferViewFromOffset;
         alignBinaries();
+        if (m_enableComment)
+            m_json["accessors"][bufferViewIndex]["__comment"] = QString("/accessors/%1: uv").arg(QString::number(bufferViewIndex)).toUtf8().constData();
         m_json["accessors"][bufferViewIndex]["bufferView"] = bufferViewIndex;
         m_json["accessors"][bufferViewIndex]["byteOffset"] = 0;
         m_json["accessors"][bufferViewIndex]["componentType"] = 5126;
diff --git a/src/gltffile.h b/src/gltffile.h
index 7d3b0e2d..79339e10 100644
--- a/src/gltffile.h
+++ b/src/gltffile.h
@@ -36,8 +36,11 @@ private:
     QString getMatrixStringInColumnOrder(const QMatrix4x4 &mat);
     QString m_filename;
     QString m_textureFilename;
+    bool m_outputNormal;
 private:
     nlohmann::json m_json;
+public:
+    static bool m_enableComment;
 };
 
 #endif
diff --git a/src/intermediateboneremover.cpp b/src/intermediateboneremover.cpp
new file mode 100644
index 00000000..0c8086f4
--- /dev/null
+++ b/src/intermediateboneremover.cpp
@@ -0,0 +1,97 @@
+#include "intermediateboneremover.h"
+
+void IntermediateBoneRemover::addEdge(int fromPartId, int fromNodeId, int toPartId, int toNodeId)
+{
+    auto &neighborMap = m_neighborMap[std::make_pair(fromPartId, fromNodeId)];
+    neighborMap.push_back(std::make_pair(toPartId, toNodeId));
+}
+
+const std::map<std::pair<int, int>, IntermediateBoneNode> &IntermediateBoneRemover::intermediateNodes()
+{
+    return m_intermediateNodes;
+}
+
+const std::vector<std::tuple<int, int, int, int>> &IntermediateBoneRemover::newEdges()
+{
+    return m_newEdges;
+}
+
+void IntermediateBoneRemover::markNodeAsStart(int partId, int nodeId)
+{
+    m_startNodeSet.insert(std::make_pair(partId, nodeId));
+}
+
+void IntermediateBoneRemover::markNodeAsEssential(int partId, int nodeId)
+{
+    m_essentialNodeSet.insert(std::make_pair(partId, nodeId));
+}
+
+void IntermediateBoneRemover::solveFrom(int partId, int nodeId)
+{
+    std::pair<int, int> pair = std::make_pair(partId, nodeId);
+    std::vector<std::pair<int, int>> trace;
+    solveFromPairAndSaveTraceTo(pair, trace);
+}
+
+void IntermediateBoneRemover::addNeighborsOfIntermediateNodeFrom(std::pair<int, int> node, const IntermediateBoneNode &source)
+{
+    if (m_addedSet.find(node) != m_addedSet.end())
+        return;
+    m_addedSet.insert(node);
+    if (m_essentialNodeSet.find(node) != m_essentialNodeSet.end() ||
+            m_startNodeSet.find(node) != m_startNodeSet.end())
+        return;
+    IntermediateBoneNode intermediate = source;
+    intermediate.partId = node.first;
+    intermediate.nodeId = node.second;
+    m_intermediateNodes[std::make_pair(intermediate.partId, intermediate.nodeId)] = intermediate;
+    const auto &it = m_neighborMap.find(node);
+    if (it == m_neighborMap.end())
+        return;
+    for (const auto &neighbor: it->second) {
+        addNeighborsOfIntermediateNodeFrom(neighbor, source);
+    }
+}
+
+void IntermediateBoneRemover::solveFromPairAndSaveTraceTo(std::pair<int, int> node, std::vector<std::pair<int, int>> &history)
+{
+    if (m_solvedSet.find(node) != m_solvedSet.end())
+        return;
+    m_solvedSet.insert(node);
+    if (m_essentialNodeSet.find(node) != m_essentialNodeSet.end()) {
+        for (int i = history.size() - 1; i >= 0; i--) {
+            if (m_essentialNodeSet.find(history[i]) != m_essentialNodeSet.end() ||
+                    m_startNodeSet.find(history[i]) != m_startNodeSet.end()) {
+                IntermediateBoneNode intermediate;
+                intermediate.attachedFromPartId = history[i].first;
+                intermediate.attachedFromNodeId = history[i].second;
+                intermediate.attachedToPartId = node.first;
+                intermediate.attachedToNodeId = node.second;
+                int removedNodeNum = 0;
+                for (int j = i + 1; j <= (int)history.size() - 1; j++) {
+                    intermediate.partId = history[j].first;
+                    intermediate.nodeId = history[j].second;
+                    removedNodeNum++;
+                    m_intermediateNodes[std::make_pair(intermediate.partId, intermediate.nodeId)] = intermediate;
+                    addNeighborsOfIntermediateNodeFrom(std::make_pair(intermediate.partId, intermediate.nodeId), intermediate);
+                }
+                if (removedNodeNum > 0) {
+                    m_newEdges.push_back(std::make_tuple(intermediate.attachedFromPartId,
+                        intermediate.attachedFromNodeId,
+                        intermediate.attachedToPartId,
+                        intermediate.attachedToNodeId));
+                }
+                break;
+            }
+        }
+    }
+    history.push_back(node);
+    const auto &it = m_neighborMap.find(node);
+    if (it == m_neighborMap.end())
+        return;
+    for (const auto &neighbor: it->second) {
+        std::vector<std::pair<int, int>> subHistory = history;
+        solveFromPairAndSaveTraceTo(neighbor, subHistory);
+    }
+}
+
diff --git a/src/intermediateboneremover.h b/src/intermediateboneremover.h
new file mode 100644
index 00000000..485115bc
--- /dev/null
+++ b/src/intermediateboneremover.h
@@ -0,0 +1,39 @@
+#ifndef INTERMEDIATE_BONE_REMOVER_H
+#define INTERMEDIATE_BONE_REMOVER_H
+#include <vector>
+#include <map>
+#include <set>
+
+struct IntermediateBoneNode
+{
+    int partId;
+    int nodeId;
+    int attachedFromPartId;
+    int attachedFromNodeId;
+    int attachedToPartId;
+    int attachedToNodeId;
+};
+
+class IntermediateBoneRemover
+{
+public:
+    void addEdge(int fromPartId, int fromNodeId, int toPartId, int toNodeId);
+    void markNodeAsStart(int partId, int nodeId);
+    void markNodeAsEssential(int partId, int nodeId);
+    void solveFrom(int partId, int nodeId);
+    const std::map<std::pair<int, int>, IntermediateBoneNode> &intermediateNodes();
+    const std::vector<std::tuple<int, int, int, int>> &newEdges();
+private:
+    void solveFromPairAndSaveTraceTo(std::pair<int, int> node, std::vector<std::pair<int, int>> &history);
+    void addNeighborsOfIntermediateNodeFrom(std::pair<int, int> node, const IntermediateBoneNode &source);
+    std::map<std::pair<int, int>, IntermediateBoneNode> m_intermediateNodes;
+    std::set<std::pair<int, int>> m_startNodeSet;
+    std::set<std::pair<int, int>> m_essentialNodeSet;
+    std::map<std::pair<int, int>, std::vector<std::pair<int, int>>> m_neighborMap;
+    std::set<std::pair<int, int>> m_solvedSet;
+    std::vector<std::tuple<int, int, int, int>> m_newEdges;
+    std::set<std::pair<int, int>> m_addedSet;
+};
+
+#endif
+
diff --git a/src/meshresultcontext.cpp b/src/meshresultcontext.cpp
index f76e1223..5230b199 100644
--- a/src/meshresultcontext.cpp
+++ b/src/meshresultcontext.cpp
@@ -401,6 +401,7 @@ const std::map<std::pair<int, int>, std::vector<std::pair<int, int>>> &MeshResul
 
 void MeshResultContext::calculateBmeshNodeNeighbors(std::map<std::pair<int, int>, std::vector<std::pair<int, int>>> &nodeNeighbors)
 {
+    nodeNeighbors.clear();
     for (const auto &it: bmeshEdges) {
         nodeNeighbors[std::make_pair(it.fromBmeshId, it.fromNodeId)].push_back(std::make_pair(it.toBmeshId, it.toNodeId));
         nodeNeighbors[std::make_pair(it.toBmeshId, it.toNodeId)].push_back(std::make_pair(it.fromBmeshId, it.fromNodeId));
@@ -459,7 +460,7 @@ const std::vector<std::vector<ResultVertexWeight>> &MeshResultContext::vertexWei
     return m_resultVertexWeights;
 }
 
-void MeshResultContext::calculateVertexWeights(std::vector<std::vector<ResultVertexWeight>> &vertexWeights)
+void MeshResultContext::calculateVertexWeights(std::vector<std::vector<ResultVertexWeight>> &vertexWeights, const std::map<std::pair<int, int>, IntermediateBoneNode> *intermediateNodes)
 {
     vertexWeights.clear();
     vertexWeights.resize(vertices.size());
@@ -493,6 +494,48 @@ void MeshResultContext::calculateVertexWeights(std::vector<std::vector<ResultVer
             it[i].weight = (float)it[i].count / total;
         }
     }
+    if (nullptr != intermediateNodes) {
+        // We removed some intermediate nodes, so we should recalculate the vertex weights.
+        for (auto &it: vertexWeights) {
+            std::vector<std::pair<std::pair<int, int>, float>> weights;
+            for (auto i = 0u; i < it.size(); i++) {
+                const auto &findInter = intermediateNodes->find(it[i].sourceNode);
+                if (findInter != intermediateNodes->end()) {
+                    const auto &interBmeshNode = bmeshNodeMap().find(findInter->first);
+                    const auto &attachedFromBmeshNode = bmeshNodeMap().find(std::make_pair(findInter->second.attachedFromPartId, findInter->second.attachedFromNodeId));
+                    const auto &attachedToBmeshNode = bmeshNodeMap().find(std::make_pair(findInter->second.attachedToPartId, findInter->second.attachedToNodeId));
+                    if (interBmeshNode != bmeshNodeMap().end() &&
+                            attachedFromBmeshNode != bmeshNodeMap().end() &&
+                            attachedToBmeshNode != bmeshNodeMap().end()) {
+                        float distWithFrom = interBmeshNode->second->origin.distanceToPoint(attachedFromBmeshNode->second->origin);
+                        float distWithTo = interBmeshNode->second->origin.distanceToPoint(attachedToBmeshNode->second->origin);
+                        float distTotal = distWithFrom + distWithTo;
+                        if (distTotal > 0) {
+                            weights.push_back(std::make_pair(attachedFromBmeshNode->first, it[i].weight * distWithFrom / distTotal));
+                            weights.push_back(std::make_pair(attachedToBmeshNode->first, it[i].weight * distWithTo / distTotal));
+                        }
+                    }
+                } else {
+                    weights.push_back(std::make_pair(it[i].sourceNode, it[i].weight));
+                }
+            }
+            std::sort(weights.begin(), weights.end(), [](const std::pair<std::pair<int, int>, float> &a, const std::pair<std::pair<int, int>, float> &b) -> bool {
+                return a.second > b.second;
+            });
+            float total = 0;
+            for (auto i = 0u; i < MAX_WEIGHT_NUM && i < weights.size(); i++) {
+                total += weights[i].second;
+            }
+            for (auto i = 0u; i < MAX_WEIGHT_NUM && i < weights.size(); i++) {
+                weights[i].second = weights[i].second / total;
+            }
+            for (auto i = 0u; i < MAX_WEIGHT_NUM && i < weights.size(); i++) {
+                it[i].sourceNode = weights[i].first;
+                it[i].weight = weights[i].second;
+                it[i].count = -1; // no use
+            }
+        }
+    }
 }
 
 const std::map<int, ResultPart> &MeshResultContext::parts()
@@ -716,3 +759,46 @@ void MeshResultContext::calculateResultRearrangedVertices(std::vector<ResultRear
         rearrangedTriangles.push_back(newTriangle);
     }
 }
+
+void MeshResultContext::removeIntermediateBones()
+{
+    Q_ASSERT(m_vertexWeightsResolved);
+    Q_ASSERT(m_bmeshNodeNeighborsResolved);
+    IntermediateBoneRemover remover;
+    for (const auto &edge: bmeshEdges) {
+        remover.addEdge(edge.fromBmeshId, edge.fromNodeId, edge.toBmeshId, edge.toNodeId);
+    }
+    for (const auto &node: bmeshNodes) {
+        if (SkeletonBoneMarkIsStart(node.boneMark)) {
+            remover.markNodeAsStart(node.bmeshId, node.nodeId);
+        } else if (SkeletonBoneMark::None != node.boneMark) {
+            remover.markNodeAsEssential(node.bmeshId, node.nodeId);
+        }
+    }
+    const BmeshNode *centerNode = centerBmeshNode();
+    if (nullptr == centerNode)
+        return;
+    remover.solveFrom(centerNode->bmeshId, centerNode->nodeId);
+    
+    const auto &intermediateNodes = remover.intermediateNodes();
+    
+    calculateVertexWeights(m_resultVertexWeights, &intermediateNodes);
+    
+    const auto oldEdges = bmeshEdges;
+    bmeshEdges.clear();
+    for (const auto &old: oldEdges) {
+        if (intermediateNodes.find(std::make_pair(old.fromBmeshId, old.fromNodeId)) != intermediateNodes.end() ||
+                intermediateNodes.find(std::make_pair(old.toBmeshId, old.toNodeId)) != intermediateNodes.end())
+            continue;
+        bmeshEdges.push_back(old);
+    }
+    for (const auto &edge: remover.newEdges()) {
+        BmeshEdge newEdge;
+        newEdge.fromBmeshId = std::get<0>(edge);
+        newEdge.fromNodeId = std::get<1>(edge);
+        newEdge.toBmeshId = std::get<2>(edge);
+        newEdge.toNodeId = std::get<3>(edge);
+        bmeshEdges.push_back(newEdge);
+    }
+    calculateBmeshNodeNeighbors(m_nodeNeighbors);
+}
diff --git a/src/meshresultcontext.h b/src/meshresultcontext.h
index e7d85d96..2ecd8ceb 100644
--- a/src/meshresultcontext.h
+++ b/src/meshresultcontext.h
@@ -7,6 +7,7 @@
 #include <QColor>
 #include "positionmap.h"
 #include "skeletonbonemark.h"
+#include "intermediateboneremover.h"
 
 #define MAX_WEIGHT_NUM  4
 
@@ -117,6 +118,7 @@ public:
     const std::vector<ResultTriangleUv> &triangleUvs();
     const std::vector<ResultRearrangedVertex> &rearrangedVertices();
     const std::vector<ResultRearrangedTriangle> &rearrangedTriangles();
+    void removeIntermediateBones();
 private:
     bool m_triangleSourceResolved;
     bool m_triangleColorResolved;
@@ -154,7 +156,7 @@ private:
     void calculateBmeshNodeNeighbors();
     void calculateBmeshEdgeDirectionsFromNode(std::pair<int, int> node, std::set<std::pair<int, int>> &visitedNodes, std::set<std::pair<std::pair<int, int>, std::pair<int, int>>> &connections, std::vector<BmeshEdge> &rearrangedEdges);
     void calculateBmeshNodeNeighbors(std::map<std::pair<int, int>, std::vector<std::pair<int, int>>> &nodeNeighbors);
-    void calculateVertexWeights(std::vector<std::vector<ResultVertexWeight>> &vertexWeights);
+    void calculateVertexWeights(std::vector<std::vector<ResultVertexWeight>> &vertexWeights, const std::map<std::pair<int, int>, IntermediateBoneNode> *intermediateNodes=nullptr);
     void calculateResultParts(std::map<int, ResultPart> &parts);
     void calculateResultTriangleUvs(std::vector<ResultTriangleUv> &uvs, std::set<int> &seamVertices);
     void calculateResultRearrangedVertices(std::vector<ResultRearrangedVertex> &rearrangedVertices, std::vector<ResultRearrangedTriangle> &rearrangedTriangles);
diff --git a/src/meshresultpostprocessor.cpp b/src/meshresultpostprocessor.cpp
index c4431fc0..c1f598a4 100644
--- a/src/meshresultpostprocessor.cpp
+++ b/src/meshresultpostprocessor.cpp
@@ -24,6 +24,8 @@ void MeshResultPostProcessor::process()
     if (!m_meshResultContext->bmeshNodes.empty()) {
         m_meshResultContext->resolveBmeshConnectivity();
         m_meshResultContext->resolveBmeshEdgeDirections();
+        m_meshResultContext->vertexWeights();
+        m_meshResultContext->removeIntermediateBones();
         m_meshResultContext->rearrangedVertices();
         m_meshResultContext->rearrangedTriangles();
         m_meshResultContext->parts();
diff --git a/thirdparty/meshlite/meshlite_unstable_vc14_x64/meshlite.dll b/thirdparty/meshlite/meshlite_unstable_vc14_x64/meshlite.dll
index cba200e2..2299ce4c 100644
Binary files a/thirdparty/meshlite/meshlite_unstable_vc14_x64/meshlite.dll and b/thirdparty/meshlite/meshlite_unstable_vc14_x64/meshlite.dll differ
diff --git a/thirdparty/meshlite/meshlite_unstable_vc14_x64/meshlite.dll.lib b/thirdparty/meshlite/meshlite_unstable_vc14_x64/meshlite.dll.lib
index 0235d89f..340aafd5 100644
Binary files a/thirdparty/meshlite/meshlite_unstable_vc14_x64/meshlite.dll.lib and b/thirdparty/meshlite/meshlite_unstable_vc14_x64/meshlite.dll.lib differ
diff --git a/thirdparty/meshlite/meshlite_unstable_vc14_x86/meshlite.dll b/thirdparty/meshlite/meshlite_unstable_vc14_x86/meshlite.dll
index f46f2e46..d3681cb7 100644
Binary files a/thirdparty/meshlite/meshlite_unstable_vc14_x86/meshlite.dll and b/thirdparty/meshlite/meshlite_unstable_vc14_x86/meshlite.dll differ
diff --git a/thirdparty/meshlite/meshlite_unstable_vc14_x86/meshlite.dll.lib b/thirdparty/meshlite/meshlite_unstable_vc14_x86/meshlite.dll.lib
index 4eaa05f0..9c300c86 100644
Binary files a/thirdparty/meshlite/meshlite_unstable_vc14_x86/meshlite.dll.lib and b/thirdparty/meshlite/meshlite_unstable_vc14_x86/meshlite.dll.lib differ