diff --git a/dust3d.pro b/dust3d.pro
index 8ad59e0d..0e3ddfe4 100644
--- a/dust3d.pro
+++ b/dust3d.pro
@@ -535,6 +535,9 @@ HEADERS += src/statusbarlabel.h
 SOURCES += src/silhouetteimagegenerator.cpp
 HEADERS += src/silhouetteimagegenerator.h
 
+SOURCES += src/bonedocument.cpp
+HEADERS += src/bonedocument.h
+
 SOURCES += src/main.cpp
 
 HEADERS += src/version.h
diff --git a/src/bonedocument.cpp b/src/bonedocument.cpp
new file mode 100644
index 00000000..965f206c
--- /dev/null
+++ b/src/bonedocument.cpp
@@ -0,0 +1,62 @@
+#include "bonedocument.h"
+
+BoneDocument::BoneDocument()
+{
+}
+
+bool BoneDocument::undoable(void) const
+{
+    return false;
+}
+
+bool BoneDocument::redoable(void) const
+{
+    return false;
+}
+
+bool BoneDocument::hasPastableNodesInClipboard(void) const
+{
+    return false;
+}
+
+bool BoneDocument::originSettled(void) const
+{
+    return false;
+}
+
+bool BoneDocument::isNodeEditable(QUuid) const
+{
+    return false;
+}
+
+bool BoneDocument::isEdgeEditable(QUuid) const
+{
+    return false;
+}
+
+void BoneDocument::copyNodes(std::set<QUuid> nodeIdSet) const
+{
+    // TODO:
+}
+
+
+void BoneDocument::undo(void)
+{
+    // TODO:
+}
+
+void BoneDocument::redo(void)
+{
+    // TODO:
+}
+
+void BoneDocument::paste(void)
+{
+    // TODO:
+}
+
+void BoneDocument::updateTurnaround(const QImage &image)
+{
+    turnaround = image;
+    emit turnaroundChanged();
+}
diff --git a/src/bonedocument.h b/src/bonedocument.h
new file mode 100644
index 00000000..51d78e15
--- /dev/null
+++ b/src/bonedocument.h
@@ -0,0 +1,25 @@
+#ifndef DUST3D_BONE_DOCUMENT_H
+#define DUST3D_BONE_DOCUMENT_H
+#include "skeletondocument.h"
+
+class BoneDocument : public SkeletonDocument
+{
+    Q_OBJECT
+signals:
+    void turnaroundChanged();
+public:
+    BoneDocument();
+    bool undoable(void) const;
+    bool redoable(void) const;
+    bool hasPastableNodesInClipboard(void) const;
+    bool originSettled(void) const;
+    bool isNodeEditable(QUuid) const;
+    bool isEdgeEditable(QUuid) const;
+    void copyNodes(std::set<QUuid> nodeIdSet) const;
+    void undo(void);
+    void redo(void);
+    void paste(void);
+    void updateTurnaround(const QImage &image);
+};
+
+#endif
diff --git a/src/documentwindow.cpp b/src/documentwindow.cpp
index f3c57306..829619e8 100644
--- a/src/documentwindow.cpp
+++ b/src/documentwindow.cpp
@@ -54,6 +54,7 @@
 #include "statusbarlabel.h"
 #include "silhouetteimagegenerator.h"
 #include "flowlayout.h"
+#include "bonedocument.h"
 
 int DocumentWindow::m_autoRecovered = false;
 
@@ -206,6 +207,11 @@ DocumentWindow::DocumentWindow() :
     
     SkeletonGraphicsWidget *shapeGraphicsWidget = new SkeletonGraphicsWidget(m_document);
     m_shapeGraphicsWidget = shapeGraphicsWidget;
+    
+    m_boneDocument = new BoneDocument;
+    
+    SkeletonGraphicsWidget *boneGraphicsWidget = new SkeletonGraphicsWidget(m_boneDocument);
+    m_boneGraphicsWidget = boneGraphicsWidget;
 
     QVBoxLayout *toolButtonLayout = new QVBoxLayout;
     toolButtonLayout->setSpacing(0);
@@ -323,8 +329,18 @@ DocumentWindow::DocumentWindow() :
     shapeGraphicsLayout->addWidget(shapeGraphicsWidget);
     shapeWidget->setLayout(shapeGraphicsLayout);
     
+    QWidget *boneWidget = new QWidget;
+    
+    QGridLayout *boneGraphicsLayout = new QGridLayout;
+    boneGraphicsLayout->setSpacing(0);
+    boneGraphicsLayout->setContentsMargins(0, 0, 0, 0);
+    boneGraphicsLayout->addWidget(boneGraphicsWidget);
+    boneWidget->setLayout(boneGraphicsLayout);
+    
     QStackedWidget *canvasStackedWidget = new QStackedWidget;
+    canvasStackedWidget->addWidget(boneWidget);
     canvasStackedWidget->addWidget(shapeWidget);
+    canvasStackedWidget->setCurrentIndex(1);
 
     GraphicsContainerWidget *containerWidget = new GraphicsContainerWidget;
     containerWidget->setGraphicsWidget(shapeGraphicsWidget);
@@ -338,6 +354,17 @@ DocumentWindow::DocumentWindow() :
     containerWidget->setAutoFillBackground(true);
     containerWidget->setPalette(Theme::statusBarActivePalette);
     
+    auto setGraphicsIndex = [=](int index) {
+        canvasStackedWidget->setCurrentIndex(index);
+        if (0 == index) {
+            containerWidget->setGraphicsWidget(boneGraphicsWidget);
+            boneGraphicsWidget->canvasResized();
+        } else if (1 == index) {
+            containerWidget->setGraphicsWidget(shapeGraphicsWidget);
+            shapeGraphicsWidget->canvasResized();
+        }
+    };
+    
     m_graphicsContainerWidget = containerWidget;
 
     m_modelRenderWidget = new ModelWidget(containerWidget);
@@ -386,6 +413,7 @@ DocumentWindow::DocumentWindow() :
     connect(m_modelRenderWidget, &ModelWidget::renderParametersChanged, this, &DocumentWindow::delayedGenerateNormalAndDepthMaps);
     
     m_shapeGraphicsWidget->setModelWidget(m_modelRenderWidget);
+    m_boneGraphicsWidget->setModelWidget(m_modelRenderWidget);
     containerWidget->setModelWidget(m_modelRenderWidget);
     
     setTabPosition(Qt::RightDockWidgetArea, QTabWidget::East);
@@ -519,11 +547,13 @@ DocumentWindow::DocumentWindow() :
     connect(boneLabel, &StatusBarLabel::clicked, this, [=]() {
         boneLabel->setSelected(true);
         shapeLabel->setSelected(false);
+        setGraphicsIndex(0);
         updateGraphicsViewEditTarget(GraphicsViewEditTarget::Bone);
     });
     connect(shapeLabel, &StatusBarLabel::clicked, this, [=]() {
         shapeLabel->setSelected(true);
         boneLabel->setSelected(false);
+        setGraphicsIndex(1);
         updateGraphicsViewEditTarget(GraphicsViewEditTarget::Shape);
     });
     
@@ -808,9 +838,13 @@ DocumentWindow::DocumentWindow() :
 
     connect(containerWidget, &GraphicsContainerWidget::containerSizeChanged,
         shapeGraphicsWidget, &SkeletonGraphicsWidget::canvasResized);
+    connect(containerWidget, &GraphicsContainerWidget::containerSizeChanged,
+        boneGraphicsWidget, &SkeletonGraphicsWidget::canvasResized);
 
     connect(m_document, &Document::turnaroundChanged,
         shapeGraphicsWidget, &SkeletonGraphicsWidget::turnaroundChanged);
+    connect(m_boneDocument, &BoneDocument::turnaroundChanged,
+        boneGraphicsWidget, &SkeletonGraphicsWidget::turnaroundChanged);
 
     connect(addButton, &QPushButton::clicked, [=]() {
         m_document->setEditMode(SkeletonDocumentEditMode::Add);
@@ -2411,7 +2445,7 @@ void DocumentWindow::silhouetteImageReady()
 {
     QImage *image = m_silhouetteImageGenerator->takeResultImage();
     if (nullptr != image)
-        image->save("test.png");
+        m_boneDocument->updateTurnaround(*image);
     delete image;
     
     delete m_silhouetteImageGenerator;
diff --git a/src/documentwindow.h b/src/documentwindow.h
index c218299d..69ff8725 100644
--- a/src/documentwindow.h
+++ b/src/documentwindow.h
@@ -25,6 +25,7 @@ class SkeletonGraphicsWidget;
 class PartTreeWidget;
 class SpinnableAwesomeButton;
 class SilhouetteImageGenerator;
+class BoneDocument;
 
 class DocumentWindow : public QMainWindow
 {
@@ -123,6 +124,7 @@ private:
     void createPartSnapshotForFillMesh(const QUuid &fillMeshFileId, Snapshot *snapshot);
 private:
     Document *m_document;
+    BoneDocument *m_boneDocument;
     bool m_firstShow;
     bool m_documentSaved;
     PreferencesWidget *m_preferencesWidget;
@@ -136,6 +138,7 @@ private:
     
     ModelWidget *m_modelRenderWidget;
     SkeletonGraphicsWidget *m_shapeGraphicsWidget;
+    SkeletonGraphicsWidget *m_boneGraphicsWidget;
     RigWidget *m_rigWidget;
     GraphicsContainerWidget *m_graphicsContainerWidget;