diff --git a/src/libslic3r/Fill/FillBase.hpp b/src/libslic3r/Fill/FillBase.hpp
index 77799f6fa..8bf6c3689 100644
--- a/src/libslic3r/Fill/FillBase.hpp
+++ b/src/libslic3r/Fill/FillBase.hpp
@@ -11,6 +11,7 @@
 #include "../libslic3r.h"
 #include "../BoundingBox.hpp"
 #include "../PrintConfig.hpp"
+#include "../Utils.hpp"
 
 namespace Slic3r {
 
@@ -40,7 +41,7 @@ struct FillParams
     // in this case we don't try to make more continuous paths
     bool        complete;
 };
-static_assert(std::is_trivially_copyable<FillParams>::value, "FillParams class is not POD (and it should be - see constructor).");
+static_assert(IsTriviallyCopyable<FillParams>::value, "FillParams class is not POD (and it should be - see constructor).");
 
 class Fill
 {
diff --git a/src/libslic3r/Slicing.hpp b/src/libslic3r/Slicing.hpp
index 028605fd5..094527850 100644
--- a/src/libslic3r/Slicing.hpp
+++ b/src/libslic3r/Slicing.hpp
@@ -10,6 +10,7 @@
 #include <vector>
 
 #include "libslic3r.h"
+#include "Utils.hpp"
 namespace Slic3r
 {
 
@@ -93,7 +94,7 @@ struct SlicingParameters
     coordf_t 	object_print_z_min;
     coordf_t 	object_print_z_max;
 };
-static_assert(std::is_trivially_copyable<SlicingParameters>::value, "SlicingParameters class is not POD (and it should be - see constructor).");
+static_assert(IsTriviallyCopyable<SlicingParameters>::value, "SlicingParameters class is not POD (and it should be - see constructor).");
 
 
 // The two slicing parameters lead to the same layering as long as the variable layer thickness is not in action.
diff --git a/src/libslic3r/Utils.hpp b/src/libslic3r/Utils.hpp
index cfae9edd1..ed12d0559 100644
--- a/src/libslic3r/Utils.hpp
+++ b/src/libslic3r/Utils.hpp
@@ -159,6 +159,16 @@ template<class T> size_t next_highest_power_of_2(T v,
 extern std::string xml_escape(std::string text);
 
 
+#if defined __GNUC__ & __GNUC__ < 5
+// Older GCCs don't have std::is_trivially_copyable
+// cf. https://gcc.gnu.org/onlinedocs/gcc-4.9.4/libstdc++/manual/manual/status.html#status.iso.2011
+#warning "GCC version < 5, faking std::is_trivially_copyable"
+template<typename T> struct IsTriviallyCopyable { static constexpr bool value = true; };
+#else
+template<typename T> struct IsTriviallyCopyable : public std::is_trivially_copyable<T> {};
+#endif
+
+
 class ScopeGuard
 {
 public:
diff --git a/src/slic3r/GUI/GLCanvas3D.cpp b/src/slic3r/GUI/GLCanvas3D.cpp
index 411895b03..42899b96b 100644
--- a/src/slic3r/GUI/GLCanvas3D.cpp
+++ b/src/slic3r/GUI/GLCanvas3D.cpp
@@ -856,6 +856,14 @@ bool GLCanvas3D::LayersEditing::init(const std::string& vertex_shader_filename,
     return true;
 }
 
+void GLCanvas3D::LayersEditing::set_config(const DynamicPrintConfig* config)
+{ 
+    m_config = config;
+    delete m_slicing_parameters;
+    m_slicing_parameters = nullptr;
+    m_layers_texture.valid = false;
+}
+
 void GLCanvas3D::LayersEditing::select_object(const Model &model, int object_id)
 {
     const ModelObject *model_object_new = (object_id >= 0) ? model.objects[object_id] : nullptr;
@@ -864,6 +872,7 @@ void GLCanvas3D::LayersEditing::select_object(const Model &model, int object_id)
         m_layer_height_profile_modified = false;
         delete m_slicing_parameters;
         m_slicing_parameters = nullptr;
+        m_layers_texture.valid = false;
     }
     this->last_object_id = object_id;
     m_model_object       = model_object_new;
@@ -1167,6 +1176,13 @@ void GLCanvas3D::LayersEditing::adjust_layer_height_profile()
     m_layers_texture.valid = false;
 }
 
+void GLCanvas3D::LayersEditing::reset_layer_height_profile()
+{
+	const_cast<ModelObject*>(m_model_object)->layer_height_profile.clear();
+    m_layer_height_profile.clear();
+    m_layers_texture.valid = false;
+}
+
 void GLCanvas3D::LayersEditing::generate_layer_height_texture()
 {
 	this->update_slicing_parameters();
@@ -5024,7 +5040,7 @@ void GLCanvas3D::on_mouse(wxMouseEvent& evt)
             if (evt.LeftDown())
             {
                 // A volume is selected and the mouse is inside the reset button. Reset the ModelObject's layer height profile.
-				m_model->objects[layer_editing_object_idx]->layer_height_profile.clear();
+				m_layers_editing.reset_layer_height_profile();
                 // Index 2 means no editing, just wait for mouse up event.
                 m_layers_editing.state = LayersEditing::Completed;
 
diff --git a/src/slic3r/GUI/GLCanvas3D.hpp b/src/slic3r/GUI/GLCanvas3D.hpp
index 11ef055af..8a700cfeb 100644
--- a/src/slic3r/GUI/GLCanvas3D.hpp
+++ b/src/slic3r/GUI/GLCanvas3D.hpp
@@ -346,7 +346,7 @@ class GLCanvas3D
         ~LayersEditing();
 
         bool init(const std::string& vertex_shader_filename, const std::string& fragment_shader_filename);
-		void set_config(const DynamicPrintConfig* config) { m_config = config; delete m_slicing_parameters; m_slicing_parameters = nullptr; }
+		void set_config(const DynamicPrintConfig* config);
         void select_object(const Model &model, int object_id);
 
         bool is_allowed() const;
@@ -358,9 +358,9 @@ class GLCanvas3D
         void render_overlay(const GLCanvas3D& canvas) const;
         void render_volumes(const GLCanvas3D& canvas, const GLVolumeCollection& volumes) const;
 
-        void generate_layer_height_texture();
 		void adjust_layer_height_profile();
 		void accept_changes(GLCanvas3D& canvas);
+        void reset_layer_height_profile();
 
         static float get_cursor_z_relative(const GLCanvas3D& canvas);
         static bool bar_rect_contains(const GLCanvas3D& canvas, float x, float y);
@@ -374,6 +374,7 @@ class GLCanvas3D
 
     private:
         bool _is_initialized() const;
+        void generate_layer_height_texture();
         void _render_tooltip_texture(const GLCanvas3D& canvas, const Rect& bar_rect, const Rect& reset_rect) const;
         void _render_reset_texture(const Rect& reset_rect) const;
         void _render_active_object_annotations(const GLCanvas3D& canvas, const Rect& bar_rect) const;
diff --git a/src/slic3r/GUI/GUI_ObjectList.cpp b/src/slic3r/GUI/GUI_ObjectList.cpp
index 38e1dfd9c..83f5951c2 100644
--- a/src/slic3r/GUI/GUI_ObjectList.cpp
+++ b/src/slic3r/GUI/GUI_ObjectList.cpp
@@ -97,7 +97,7 @@ void ObjectList::create_objects_ctrl()
     // temporary workaround for the correct behavior of the Scrolled sidebar panel:
     // 1. set a height of the list to some big value 
     // 2. change it to the normal min value (200) after first whole App updating/layouting
-    SetMinSize(wxSize(-1, 1500));   // #ys_FIXME 
+    SetMinSize(wxSize(-1, 3000));   // #ys_FIXME 
 
     m_sizer = new wxBoxSizer(wxVERTICAL);
     m_sizer->Add(this, 1, wxGROW | wxLEFT, 20);
@@ -445,13 +445,21 @@ void ObjectList::OnBeginDrag(wxDataViewEvent &event)
 
     // only allow drags for item, not containers
     if (multiple_selection() || GetSelection()!=item || 
-        m_objects_model->GetParent(item) == wxDataViewItem(0) ||
-        m_objects_model->GetItemType(item) != itVolume ) {
+        m_objects_model->GetParent(item) == wxDataViewItem(0)) {
+        event.Veto();
+        return;
+    }
+   
+    const ItemType& type = m_objects_model->GetItemType(item);
+    if (!(type & (itVolume | itInstance))) {
         event.Veto();
         return;
     }
 
-    m_dragged_data.init(m_objects_model->GetObjectIdByItem(item), m_objects_model->GetVolumeIdByItem(item));
+    m_dragged_data.init(m_objects_model->GetObjectIdByItem(item), 
+                        type&itVolume ? m_objects_model->GetVolumeIdByItem(item) :
+                                        m_objects_model->GetInstanceIdByItem(item), 
+                        type);
 
     /* Under MSW or OSX, DnD moves an item to the place of another selected item
     * But under GTK, DnD moves an item between another two items.
@@ -470,31 +478,41 @@ void ObjectList::OnBeginDrag(wxDataViewEvent &event)
     event.SetDragFlags(wxDrag_DefaultMove); // allows both copy and move;
 }
 
+bool ObjectList::can_drop(const wxDataViewItem& item) const 
+{
+    return  m_dragged_data.type() == itInstance && !item.IsOk()     ||
+            m_dragged_data.type() == itVolume && item.IsOk() &&
+            m_objects_model->GetItemType(item) == itVolume &&
+            m_dragged_data.obj_idx() == m_objects_model->GetObjectIdByItem(item);
+}
+
 void ObjectList::OnDropPossible(wxDataViewEvent &event)
 {
-    wxDataViewItem item(event.GetItem());
+    const wxDataViewItem& item = event.GetItem();
 
-    // only allow drags for item or background, not containers
-    if (!item.IsOk() ||
-        m_objects_model->GetParent(item) == wxDataViewItem(0) || 
-        m_objects_model->GetItemType(item) != itVolume ||
-        m_dragged_data.obj_idx() != m_objects_model->GetObjectIdByItem(item))
+    if (!can_drop(item))
         event.Veto();
 }
 
 void ObjectList::OnDrop(wxDataViewEvent &event)
 {
-    wxDataViewItem item(event.GetItem());
+    const wxDataViewItem& item = event.GetItem();
 
-    if (!item.IsOk() || m_objects_model->GetParent(item) == wxDataViewItem(0) ||
-                        m_objects_model->GetItemType(item) != itVolume ||
-                        m_dragged_data.obj_idx() != m_objects_model->GetObjectIdByItem(item)) {
+    if (!can_drop(item))
+    {
         event.Veto();
         m_dragged_data.clear();
         return;
     }
 
-    const int from_volume_id = m_dragged_data.vol_idx();
+    if (m_dragged_data.type() == itInstance)
+    {
+        instance_to_separated_object(m_dragged_data.obj_idx(), m_dragged_data.sub_obj_idx());
+        m_dragged_data.clear();
+        return;
+    }
+
+    const int from_volume_id = m_dragged_data.sub_obj_idx();
     int to_volume_id = m_objects_model->GetVolumeIdByItem(item);
 
 // It looks like a fixed in current version of the wxWidgets
@@ -506,7 +524,7 @@ void ObjectList::OnDrop(wxDataViewEvent &event)
 //     if (to_volume_id > from_volume_id) to_volume_id--;
 // #endif // __WXGTK__
 
-    auto& volumes = (*m_objects)[/*m_selected_object_id*/m_dragged_data.obj_idx()]->volumes;
+    auto& volumes = (*m_objects)[m_dragged_data.obj_idx()]->volumes;
     auto delta = to_volume_id < from_volume_id ? -1 : 1;
     int cnt = 0;
     for (int id = from_volume_id; cnt < abs(from_volume_id - to_volume_id); id += delta, cnt++)
@@ -516,7 +534,7 @@ void ObjectList::OnDrop(wxDataViewEvent &event)
                                                     m_objects_model->GetParent(item)));
 
     m_parts_changed = true;
-    parts_changed(/*m_selected_object_id*/m_dragged_data.obj_idx());
+    parts_changed(m_dragged_data.obj_idx());
 
     m_dragged_data.clear();
 }
@@ -1733,6 +1751,25 @@ void ObjectList::update_settings_items()
     UnselectAll();
 }
 
+void ObjectList::instance_to_separated_object(const int obj_idx, const int inst_idx)
+{
+    // create new object from selected instance  
+    ModelObject* model_object = (*m_objects)[obj_idx]->get_model()->add_object(*(*m_objects)[obj_idx]);
+    for (int i = model_object->instances.size() - 1; i >= 0; i--)
+    {
+        if (i == inst_idx)
+            continue;
+        model_object->delete_instance(i);
+    }
+
+    // Add new object to the object_list
+    add_object_to_list(m_objects->size() - 1);
+
+    // delete selected instance from the object
+    del_subobject_from_object(obj_idx, inst_idx, itInstance);
+    delete_instance_from_list(obj_idx, inst_idx);
+}
+
 void ObjectList::ItemValueChanged(wxDataViewEvent &event)
 {
     if (event.GetColumn() == 0)
diff --git a/src/slic3r/GUI/GUI_ObjectList.hpp b/src/slic3r/GUI/GUI_ObjectList.hpp
index 7631782df..21db30ad5 100644
--- a/src/slic3r/GUI/GUI_ObjectList.hpp
+++ b/src/slic3r/GUI/GUI_ObjectList.hpp
@@ -56,22 +56,27 @@ class ObjectList : public wxDataViewCtrl
 
     struct dragged_item_data
     {
-        void init(const int obj_idx, const int vol_idx) {
+        void init(const int obj_idx, const int subobj_idx, const ItemType type) {
             m_obj_idx = obj_idx;
-            m_vol_idx = vol_idx;            
+            m_subobj_idx = subobj_idx;
+            m_type = type;
         }
 
         void clear() {
             m_obj_idx = -1;
-            m_vol_idx = -1;            
+            m_subobj_idx = -1;
+            m_type = itUndef;
         }
 
         int obj_idx() const  { return m_obj_idx; }
-        int vol_idx() const  { return m_vol_idx; }
+        int sub_obj_idx() const  { return m_subobj_idx; }
+        ItemType type() const { return m_type; }
 
     private:
         int m_obj_idx = -1;
-        int m_vol_idx = -1;
+        int m_subobj_idx = -1;
+        ItemType m_type = itUndef;
+
     } m_dragged_data;
 
     wxBoxSizer          *m_sizer {nullptr};
@@ -222,6 +227,8 @@ public:
     bool has_multi_part_objects();
     void update_settings_items();
 
+    void instance_to_separated_object(const int obj_idx, const int inst_idx);
+
 private:
     void OnChar(wxKeyEvent& event);
     void OnContextMenu(wxDataViewEvent &event);
@@ -229,6 +236,7 @@ private:
     void OnBeginDrag(wxDataViewEvent &event);
     void OnDropPossible(wxDataViewEvent &event);
     void OnDrop(wxDataViewEvent &event);
+    bool can_drop(const wxDataViewItem& item) const ;
 
     void ItemValueChanged(wxDataViewEvent &event);
     void OnEditingDone(wxDataViewEvent &event);
diff --git a/src/slic3r/GUI/Plater.cpp b/src/slic3r/GUI/Plater.cpp
index dcbea81dd..5fc4bef32 100644
--- a/src/slic3r/GUI/Plater.cpp
+++ b/src/slic3r/GUI/Plater.cpp
@@ -1066,6 +1066,7 @@ private:
     bool can_delete_object() const;
     bool can_increase_instances() const;
     bool can_decrease_instances() const;
+    bool can_set_instance_to_object() const;
     bool can_split_to_objects() const;
     bool can_split_to_volumes() const;
     bool can_split() const;
@@ -2378,11 +2379,17 @@ bool Plater::priv::init_common_menu(wxMenu* menu, const bool is_part/* = false*/
             [this](wxCommandEvent&) { q->decrease_instances(); }, "delete.png");
         wxMenuItem* item_set_number_of_copies = append_menu_item(menu, wxID_ANY, _(L("Set number of copies")) + dots, _(L("Change the number of copies of the selected object")),
             [this](wxCommandEvent&) { q->set_number_of_copies(); }, "textfield.png");
+
+        menu->AppendSeparator();
+        wxMenuItem* item_instance_to_object = append_menu_item(menu, wxID_ANY, _(L("Set as a Separated Object")) + dots, _(L("Set an Instance as a Separate Object")),
+            [this](wxCommandEvent&) { q->instance_to_separated_object(); }, "");
+
         if (q != nullptr)
         {
             q->Bind(wxEVT_UPDATE_UI, [this](wxUpdateUIEvent& evt) { evt.Enable(can_increase_instances()); }, item_increase->GetId());
             q->Bind(wxEVT_UPDATE_UI, [this](wxUpdateUIEvent& evt) { evt.Enable(can_decrease_instances()); }, item_decrease->GetId());
             q->Bind(wxEVT_UPDATE_UI, [this](wxUpdateUIEvent& evt) { evt.Enable(can_increase_instances()); }, item_set_number_of_copies->GetId());
+            q->Bind(wxEVT_UPDATE_UI, [this](wxUpdateUIEvent& evt) { evt.Enable(can_set_instance_to_object()); }, item_instance_to_object->GetId());
         }
         menu->AppendSeparator();
 
@@ -2445,9 +2452,9 @@ bool Plater::priv::complit_init_object_menu()
     // ui updates needs to be binded to the parent panel
     if (q != nullptr)
     {
-        q->Bind(wxEVT_UPDATE_UI, [this](wxUpdateUIEvent& evt) { evt.Enable(can_split/*_to_objects() || can_split_to_volumes*/()); }, item_split->GetId());
-        q->Bind(wxEVT_UPDATE_UI, [this](wxUpdateUIEvent& evt) { evt.Enable(can_split/*_to_objects*/()); }, item_split_objects->GetId());
-        q->Bind(wxEVT_UPDATE_UI, [this](wxUpdateUIEvent& evt) { evt.Enable(can_split/*_to_volumes*/()); }, item_split_volumes->GetId());
+        q->Bind(wxEVT_UPDATE_UI, [this](wxUpdateUIEvent& evt) { evt.Enable(can_split()); }, item_split->GetId());
+        q->Bind(wxEVT_UPDATE_UI, [this](wxUpdateUIEvent& evt) { evt.Enable(can_split()); }, item_split_objects->GetId());
+        q->Bind(wxEVT_UPDATE_UI, [this](wxUpdateUIEvent& evt) { evt.Enable(can_split()); }, item_split_volumes->GetId());
     }
     return true;
 }
@@ -2466,7 +2473,7 @@ bool Plater::priv::complit_init_sla_object_menu()
     // ui updates needs to be binded to the parent panel
     if (q != nullptr)
     {
-        q->Bind(wxEVT_UPDATE_UI, [this](wxUpdateUIEvent& evt) { evt.Enable(can_split/*_to_objects*/()); }, item_split->GetId());
+        q->Bind(wxEVT_UPDATE_UI, [this](wxUpdateUIEvent& evt) { evt.Enable(can_split()); }, item_split->GetId());
     }
 
     return true;
@@ -2485,7 +2492,7 @@ bool Plater::priv::complit_init_part_menu()
     // ui updates needs to be binded to the parent panel
     if (q != nullptr)
     {
-        q->Bind(wxEVT_UPDATE_UI, [this](wxUpdateUIEvent& evt) { evt.Enable(can_split/*_to_volumes*/()); },  item_split->GetId());
+        q->Bind(wxEVT_UPDATE_UI, [this](wxUpdateUIEvent& evt) { evt.Enable(can_split()); },  item_split->GetId());
     }
 
     return true;
@@ -2553,6 +2560,12 @@ bool Plater::priv::can_increase_instances() const
     return (0 <= obj_idx) && (obj_idx < (int)model.objects.size());
 }
 
+bool Plater::priv::can_set_instance_to_object() const
+{
+    const int obj_idx = get_selected_object_idx();
+    return (0 <= obj_idx) && (obj_idx < (int)model.objects.size()) && (model.objects[obj_idx]->instances.size() > 1);
+}
+
 bool Plater::priv::can_decrease_instances() const
 {
     int obj_idx = get_selected_object_idx();
@@ -2779,6 +2792,16 @@ void Plater::set_number_of_copies(/*size_t num*/)
         decrease_instances(-diff);
 }
 
+void Plater::instance_to_separated_object()
+{
+    const int obj_idx = p->get_selected_object_idx();
+    const int inst_idx = p->get_selection().get_instance_idx();
+    if (obj_idx == -1 || inst_idx == -1)
+        return;
+
+    sidebar().obj_list()->instance_to_separated_object(obj_idx, inst_idx);
+}
+
 bool Plater::is_selection_empty() const
 {
     return p->get_selection().is_empty();
diff --git a/src/slic3r/GUI/Plater.hpp b/src/slic3r/GUI/Plater.hpp
index 7b19d6f31..a0655ed55 100644
--- a/src/slic3r/GUI/Plater.hpp
+++ b/src/slic3r/GUI/Plater.hpp
@@ -136,6 +136,7 @@ public:
     void increase_instances(size_t num = 1);
     void decrease_instances(size_t num = 1);
     void set_number_of_copies(/*size_t num*/);
+    void instance_to_separated_object();
     bool is_selection_empty() const;
 
     void cut(size_t obj_idx, size_t instance_idx, coordf_t z, bool keep_upper = true, bool keep_lower = true, bool rotate_lower = false);