diff --git a/src/main.cpp b/src/main.cpp
index b19f9b42..275996d9 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -31,8 +31,10 @@ int main(int argc, char ** argv)
     
     QCoreApplication::setApplicationName("Dust 3D");
     
-    const QFont fixedFont = QFontDatabase::systemFont(QFontDatabase::FixedFont);
-    QApplication::setFont(fixedFont);
+    QFont font;
+    font.setWeight(QFont::Light);
+    font.setPointSize(9);
+    QApplication::setFont(font);
     
     MainWindow mainWindow;
     mainWindow.showMaximized();
diff --git a/src/mainwindow.cpp b/src/mainwindow.cpp
index bfc03811..3776f3e1 100644
--- a/src/mainwindow.cpp
+++ b/src/mainwindow.cpp
@@ -64,7 +64,7 @@ MainWindow::MainWindow()
     
     QVBoxLayout *modelRightLayout = new QVBoxLayout;
     
-    modelRightLayout->addSpacing(20);
+    modelRightLayout->addSpacing(10);
     
     QPushButton *changeTurnaroundButton = new QPushButton("    Change Turnaround    ");
     modelRightLayout->addWidget(changeTurnaroundButton);
diff --git a/src/skeletoneditgraphicsview.cpp b/src/skeletoneditgraphicsview.cpp
index a69c8176..394ee811 100644
--- a/src/skeletoneditgraphicsview.cpp
+++ b/src/skeletoneditgraphicsview.cpp
@@ -497,6 +497,7 @@ void SkeletonEditGraphicsView::loadFromXmlStream(QXmlStreamReader &reader)
     std::vector<std::map<QString, QString>> pendingNodes;
     std::vector<std::map<QString, QString>> pendingEdges;
     std::map<QString, SkeletonEditNodeItem *> addedNodeMapById;
+    std::map<QString, QGraphicsItemGroup *> addedGroupMapById;
     
     while (!reader.atEnd()) {
         reader.readNext();
@@ -523,11 +524,13 @@ void SkeletonEditGraphicsView::loadFromXmlStream(QXmlStreamReader &reader)
                 }
             } else if (reader.name() == "node") {
                 QString nodeId = reader.attributes().value("id").toString();
+                QString nodeGroupId = reader.attributes().value("group").toString();
                 QString nodeType = reader.attributes().value("type").toString();
                 QString nodePairId = reader.attributes().value("pair").toString();
                 QString nodeRadius = reader.attributes().value("radius").toString();
                 std::map<QString, QString> pendingNode;
                 pendingNode["id"] = nodeId;
+                pendingNode["group"] = nodeGroupId;
                 pendingNode["type"] = nodeType;
                 pendingNode["pair"] = nodePairId;
                 pendingNode["radius"] = QString("%1").arg(nodeRadius.toFloat() * radiusMul);
@@ -554,7 +557,15 @@ void SkeletonEditGraphicsView::loadFromXmlStream(QXmlStreamReader &reader)
         float radius = (*pendingNode)["radius"].toFloat();
         QRectF nodeRect((*pendingNode)["x"].toFloat() - radius, (*pendingNode)["y"].toFloat() - radius,
             radius * 2, radius * 2);
-        addedNodeMapById[(*pendingNode)["id"]] = new SkeletonEditNodeItem(nodeRect);
+        SkeletonEditNodeItem *nodeItem = new SkeletonEditNodeItem(nodeRect);
+        addedNodeMapById[(*pendingNode)["id"]] = nodeItem;
+        std::map<QString, QGraphicsItemGroup *>::iterator findGroup = addedGroupMapById.find((*pendingNode)["group"]);
+        if (findGroup == addedGroupMapById.end()) {
+            QGraphicsItemGroup *group = new QGraphicsItemGroup;
+            scene()->addItem(group);
+            addedGroupMapById[(*pendingNode)["group"]] = group;
+        }
+        nodeItem->setGroup(addedGroupMapById[(*pendingNode)["group"]]);
     }
     
     for (size_t i = 0; i < pendingNodes.size(); i++) {
@@ -570,7 +581,9 @@ void SkeletonEditGraphicsView::loadFromXmlStream(QXmlStreamReader &reader)
     for (size_t i = 0; i < pendingEdges.size(); i++) {
         std::map<QString, QString> *pendingEdge = &pendingEdges[i];
         SkeletonEditEdgeItem *newEdge = new SkeletonEditEdgeItem();
-        newEdge->setNodes(addedNodeMapById[(*pendingEdge)["from"]], addedNodeMapById[(*pendingEdge)["to"]]);
+        SkeletonEditNodeItem *fromNodeItem = addedNodeMapById[(*pendingEdge)["from"]];
+        SkeletonEditNodeItem *toNodeItem = addedNodeMapById[(*pendingEdge)["to"]];
+        newEdge->setNodes(fromNodeItem, toNodeItem);
         scene()->addItem(newEdge);
     }
     
@@ -589,7 +602,9 @@ void SkeletonEditGraphicsView::saveToXmlStream(QXmlStreamWriter *writer)
         QList<QGraphicsItem *>::iterator it;
         QList<QGraphicsItem *> list = scene()->items();
         std::map<SkeletonEditNodeItem *, int> nodeIdMap;
+        std::map<QGraphicsItemGroup *, int> groupIdMap;
         int nextNodeId = 1;
+        int nextGroupId = 1;
         for (it = list.begin(); it != list.end(); ++it) {
             if ((*it)->data(0).toString() == "node") {
                 SkeletonEditNodeItem *nodeItem = static_cast<SkeletonEditNodeItem *>(*it);
@@ -602,7 +617,12 @@ void SkeletonEditGraphicsView::saveToXmlStream(QXmlStreamWriter *writer)
             if ((*it)->data(0).toString() == "node") {
                 SkeletonEditNodeItem *nodeItem = static_cast<SkeletonEditNodeItem *>(*it);
                 writer->writeStartElement("node");
+                    std::map<QGraphicsItemGroup *, int>::iterator findGroup = groupIdMap.find(nodeItem->group());
+                    if (findGroup == groupIdMap.end()) {
+                        groupIdMap[nodeItem->group()] = nextGroupId++;
+                    }
                     writer->writeAttribute("id", QString("node%1").arg(nodeIdMap[nodeItem]));
+                    writer->writeAttribute("group", QString("group%1").arg(groupIdMap[nodeItem->group()]));
                     writer->writeAttribute("type", nodeItem->isMaster() ? "master" : "slave");
                     writer->writeAttribute("pair", QString("node%1").arg(nodeIdMap[nodeItem->pair()]));
                     writer->writeAttribute("radius", QString("%1").arg(nodeItem->radius()));
diff --git a/src/skeletontomesh.cpp b/src/skeletontomesh.cpp
index d00b6d6a..5438dac9 100644
--- a/src/skeletontomesh.cpp
+++ b/src/skeletontomesh.cpp
@@ -353,6 +353,12 @@ void SkeletonToMesh::process()
         group->meshId = meshlite_bmesh_generate_mesh(context, group->bmeshId, group->nodes[group->rootNode].bmeshNodeId);
     }
     
+    int mergedMeshId = m_groups[0].meshId;
+    for (size_t i = 1; i < m_groups.size(); i++) {
+        mergedMeshId = meshlite_merge(context, mergedMeshId, m_groups[i].meshId);
+    }
+    
+    /*
     ExternalMesh *unionPolyhedron = makeExternalMeshFromMeshlite(context, m_groups[0].meshId);
     for (size_t i = 1; i < m_groups.size(); i++) {
         ExternalMesh *polyhedron = makeExternalMeshFromMeshlite(context, m_groups[i].meshId);
@@ -364,11 +370,13 @@ void SkeletonToMesh::process()
             break;
         }
     }
+    */
     
     for (size_t i = 1; i < m_groups.size(); i++) {
         meshlite_bmesh_destroy(context, m_groups[i].bmeshId);
     }
     
+    /*
     if (unionPolyhedron) {
         int meshIdGeneratedFromExternal = makeMeshliteMeshFromExternal(context, unionPolyhedron);
         delete unionPolyhedron;
@@ -376,6 +384,10 @@ void SkeletonToMesh::process()
         meshlite_export(context, meshIdGeneratedFromExternal, "/Users/jeremy/testlib.obj");
         m_mesh = new Mesh(context, meshIdGeneratedFromExternal);
     }
+    */
+    
+    m_mesh = new Mesh(context, mergedMeshId);
+    
     meshlite_destroy_context(context);
     emit finished();
 }