diff --git a/lib/Slic3r/GUI/Plater/3DPreview.pm b/lib/Slic3r/GUI/Plater/3DPreview.pm
index 1f7408b7a..fb1a9bbfc 100644
--- a/lib/Slic3r/GUI/Plater/3DPreview.pm
+++ b/lib/Slic3r/GUI/Plater/3DPreview.pm
@@ -80,6 +80,7 @@ sub new {
     my $checkbox_travel = Wx::CheckBox->new($self, -1, "Travel");
     my $checkbox_retractions = Wx::CheckBox->new($self, -1, "Retractions");    
     my $checkbox_unretractions = Wx::CheckBox->new($self, -1, "Unretractions");
+    my $checkbox_shells  = Wx::CheckBox->new($self, -1, "Shells");
 
     my $hsizer = Wx::BoxSizer->new(wxHORIZONTAL);
     my $vsizer = Wx::BoxSizer->new(wxVERTICAL);
@@ -106,6 +107,8 @@ sub new {
     $bottom_sizer->Add($checkbox_retractions, 0, wxEXPAND | wxALL | wxALIGN_CENTER_VERTICAL, 5);
     $bottom_sizer->AddSpacer(10);
     $bottom_sizer->Add($checkbox_unretractions, 0, wxEXPAND | wxALL | wxALIGN_CENTER_VERTICAL, 5);
+    $bottom_sizer->AddSpacer(10);
+    $bottom_sizer->Add($checkbox_shells, 0, wxEXPAND | wxALL | wxALIGN_CENTER_VERTICAL, 5);
     
     my $sizer = Wx::BoxSizer->new(wxHORIZONTAL);
     $sizer->Add($canvas, 1, wxALL | wxEXPAND, 0);
@@ -217,6 +220,12 @@ sub new {
         $self->refresh_print;
         $self->auto_zoom(1);
     });
+    EVT_CHECKBOX($self, $checkbox_shells, sub {
+        $self->print->set_gcode_preview_shells_visible($checkbox_shells->IsChecked());
+        $self->auto_zoom(0);
+        $self->refresh_print;
+        $self->auto_zoom(1);
+    });
     
     $self->SetSizer($main_sizer);
     $self->SetMinSize($self->GetSize);
diff --git a/xs/src/libslic3r/GCode/Analyzer.cpp b/xs/src/libslic3r/GCode/Analyzer.cpp
index 0288770b0..c64857566 100644
--- a/xs/src/libslic3r/GCode/Analyzer.cpp
+++ b/xs/src/libslic3r/GCode/Analyzer.cpp
@@ -298,7 +298,12 @@ void GCodeAnalyzer::PreviewData::Retraction::set_default()
 {
     color = Default_Color;
     is_visible = false;
-};
+}
+
+void GCodeAnalyzer::PreviewData::Shell::set_default()
+{
+    is_visible = false;
+}
 
 GCodeAnalyzer::PreviewData::PreviewData()
 {
@@ -311,6 +316,7 @@ void GCodeAnalyzer::PreviewData::set_default()
     travel.set_default();
     retraction.set_default();
     unretraction.set_default();
+    shell.set_default();
 }
 
 void GCodeAnalyzer::PreviewData::reset()
diff --git a/xs/src/libslic3r/GCode/Analyzer.hpp b/xs/src/libslic3r/GCode/Analyzer.hpp
index 34f1537af..6d0213422 100644
--- a/xs/src/libslic3r/GCode/Analyzer.hpp
+++ b/xs/src/libslic3r/GCode/Analyzer.hpp
@@ -256,10 +256,18 @@ public:
             void set_default();
         };
 
+        struct Shell
+        {
+            bool is_visible;
+
+            void set_default();
+        };
+
         Extrusion extrusion;
         Travel travel;
         Retraction retraction;
         Retraction unretraction;
+        Shell shell;
 
         PreviewData();
 
diff --git a/xs/src/libslic3r/Print.cpp b/xs/src/libslic3r/Print.cpp
index d0af38327..172b26cc4 100644
--- a/xs/src/libslic3r/Print.cpp
+++ b/xs/src/libslic3r/Print.cpp
@@ -102,6 +102,11 @@ void Print::set_gcode_preview_unretractions_visible(bool visible)
     gcode_preview.unretraction.is_visible = visible;
 }
 
+void Print::set_gcode_preview_shells_visible(bool visible)
+{
+    gcode_preview.shell.is_visible = visible;
+}
+
 PrintRegion* Print::add_region()
 {
     regions.push_back(new PrintRegion(this));
diff --git a/xs/src/libslic3r/Print.hpp b/xs/src/libslic3r/Print.hpp
index 4c2284446..0a6c143b9 100644
--- a/xs/src/libslic3r/Print.hpp
+++ b/xs/src/libslic3r/Print.hpp
@@ -262,6 +262,7 @@ public:
     void set_gcode_preview_travel_visible(bool visible);
     void set_gcode_preview_retractions_visible(bool visible);
     void set_gcode_preview_unretractions_visible(bool visible);
+    void set_gcode_preview_shells_visible(bool visible);
 
     // methods for handling regions
     PrintRegion* get_region(size_t idx) { return regions.at(idx); }
diff --git a/xs/src/slic3r/GUI/3DScene.cpp b/xs/src/slic3r/GUI/3DScene.cpp
index 96cbabbe9..553239a6f 100644
--- a/xs/src/slic3r/GUI/3DScene.cpp
+++ b/xs/src/slic3r/GUI/3DScene.cpp
@@ -348,7 +348,32 @@ void GLVolumeCollection::render_VBOs() const
         GLsizei n_triangles = GLsizei(std::min(volume->indexed_vertex_array.triangle_indices_size, volume->tverts_range.second - volume->tverts_range.first));
         GLsizei n_quads     = GLsizei(std::min(volume->indexed_vertex_array.quad_indices_size,     volume->qverts_range.second - volume->qverts_range.first));
         if (n_triangles + n_quads == 0)
+        {
+            if (_render_interleaved_only_volumes.enabled)
+            {
+                ::glDisableClientState(GL_VERTEX_ARRAY);
+                ::glDisableClientState(GL_NORMAL_ARRAY);
+                ::glEnable(GL_BLEND);
+                ::glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
+
+                if (color_id >= 0)
+                {
+                    float color[4];
+                    ::memcpy((void*)color, (const void*)volume->color, 3 * sizeof(float));
+                    color[3] = _render_interleaved_only_volumes.alpha;
+                    ::glUniform4fv(color_id, 1, (const GLfloat*)color);
+                }
+                else
+                    ::glColor4f(volume->color[0], volume->color[1], volume->color[2], _render_interleaved_only_volumes.alpha);
+
+                volume->render();
+
+                ::glDisable(GL_BLEND);
+                ::glEnableClientState(GL_VERTEX_ARRAY);
+                ::glEnableClientState(GL_NORMAL_ARRAY);
+            }
             continue;
+        }
         if (color_id >= 0)
             glUniform4fv(color_id, 1, (const GLfloat*)volume->color);
         else
@@ -387,7 +412,23 @@ void GLVolumeCollection::render_legacy() const
         GLsizei n_triangles = GLsizei(std::min(volume->indexed_vertex_array.triangle_indices_size, volume->tverts_range.second - volume->tverts_range.first));
         GLsizei n_quads     = GLsizei(std::min(volume->indexed_vertex_array.quad_indices_size,     volume->qverts_range.second - volume->qverts_range.first));
         if (n_triangles + n_quads == 0)
+        {
+            if (_render_interleaved_only_volumes.enabled)
+            {
+                ::glDisableClientState(GL_VERTEX_ARRAY);
+                ::glDisableClientState(GL_NORMAL_ARRAY);
+                ::glEnable(GL_BLEND);
+                ::glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
+
+                ::glColor4f(volume->color[0], volume->color[1], volume->color[2], _render_interleaved_only_volumes.alpha);
+                volume->render();
+
+                ::glDisable(GL_BLEND);
+                ::glEnableClientState(GL_VERTEX_ARRAY);
+                ::glEnableClientState(GL_NORMAL_ARRAY);
+            }
             continue;
+        }
         glColor4f(volume->color[0], volume->color[1], volume->color[2], volume->color[3]);
         glVertexPointer(3, GL_FLOAT, 6 * sizeof(float), volume->indexed_vertex_array.vertices_and_normals_interleaved.data() + 3);
         glNormalPointer(GL_FLOAT, 6 * sizeof(float), volume->indexed_vertex_array.vertices_and_normals_interleaved.data());
@@ -1314,6 +1355,9 @@ static inline std::vector<float> parse_colors(const std::vector<std::string> &sc
 
 void _3DScene::load_gcode_preview(const Print* print, GLVolumeCollection* volumes, const std::vector<std::string>& str_tool_colors, bool use_VBOs)
 {
+    if ((print == nullptr) || (volumes == nullptr))
+        return;
+
     if (volumes->empty())
     {
         std::vector<float> tool_colors = parse_colors(str_tool_colors);
@@ -1326,9 +1370,17 @@ void _3DScene::load_gcode_preview(const Print* print, GLVolumeCollection* volume
         _load_gcode_unretractions(*print, *volumes, use_VBOs);
 
         if (volumes->empty())
+        {
             reset_legend_texture();
+            volumes->set_render_interleaved_only_volumes(GLVolumeCollection::RenderInterleavedOnlyVolumes(false, 0.0f));
+        }
         else
+        {
             _generate_legend_texture(*print, tool_colors);
+
+            _load_shells(*print, *volumes, use_VBOs);
+            volumes->set_render_interleaved_only_volumes(GLVolumeCollection::RenderInterleavedOnlyVolumes(true, 0.25f));
+        }
     }
 
     _update_gcode_volumes_visibility(*print, *volumes);
@@ -2209,6 +2261,11 @@ void _3DScene::_update_gcode_volumes_visibility(const Print& print, GLVolumeColl
                     volume->is_active = print.gcode_preview.unretraction.is_visible;
                     break;
                 }
+            case GCodePreviewData::Shell:
+                {
+                    volume->is_active = print.gcode_preview.shell.is_visible;
+                    break;
+                }
             default:
                 {
                     volume->is_active = false;
@@ -2224,4 +2281,41 @@ void _3DScene::_generate_legend_texture(const Print& print, const std::vector<fl
     s_legend_texture.generate_texture(print, tool_colors);
 }
 
+void _3DScene::_load_shells(const Print& print, GLVolumeCollection& volumes, bool use_VBOs)
+{
+    size_t initial_volumes_count = volumes.volumes.size();
+    s_gcode_preview_data.first_volumes.emplace_back(GCodePreviewData::Shell, 0, (unsigned int)initial_volumes_count);
+
+    if (print.objects.empty())
+        // nothing to render, return
+        return;
+
+    // adds objects' volumes 
+    unsigned int object_id = 0;
+    for (PrintObject* obj : print.objects)
+    {
+        ModelObject* model_obj = obj->model_object();
+
+        std::vector<int> instance_ids(model_obj->instances.size());
+        for (int i = 0; i < model_obj->instances.size(); ++i)
+        {
+            instance_ids[i] = i;
+        }
+
+        for (ModelInstance* instance : model_obj->instances)
+        {
+            volumes.load_object(model_obj, object_id, instance_ids, "object", "object", "object", use_VBOs);
+        }
+
+        ++object_id;
+    }
+
+    // adds wipe tower's volume
+    coordf_t max_z = print.objects[0]->model_object()->get_model()->bounding_box().max.z;
+    const PrintConfig& config = print.config;
+    unsigned int extruders_count = config.nozzle_diameter.size();
+    if ((extruders_count > 1) && config.single_extruder_multi_material && config.wipe_tower && !config.complete_objects)
+        volumes.load_wipe_tower_preview(1000, config.wipe_tower_x, config.wipe_tower_y, config.wipe_tower_width, config.wipe_tower_per_color_wipe * (extruders_count - 1), max_z, use_VBOs);
+}
+
 }
diff --git a/xs/src/slic3r/GUI/3DScene.hpp b/xs/src/slic3r/GUI/3DScene.hpp
index 2b7f2de47..44e5dbea3 100644
--- a/xs/src/slic3r/GUI/3DScene.hpp
+++ b/xs/src/slic3r/GUI/3DScene.hpp
@@ -309,6 +309,28 @@ public:
 
 class GLVolumeCollection
 {
+public:
+    struct RenderInterleavedOnlyVolumes
+    {
+        bool enabled;
+        float alpha; // [0..1]
+
+        RenderInterleavedOnlyVolumes()
+            : enabled(false)
+            , alpha(0.0f)
+        {
+        }
+
+        RenderInterleavedOnlyVolumes(bool enabled, float alpha)
+            : enabled(enabled)
+            , alpha(alpha)
+        {
+        }
+    };
+
+private:
+    RenderInterleavedOnlyVolumes _render_interleaved_only_volumes;
+
 public:
     std::vector<GLVolume*> volumes;
     
@@ -344,6 +366,8 @@ public:
     bool empty() const { return volumes.empty(); }
     void set_range(double low, double high) { for (GLVolume *vol : this->volumes) vol->set_range(low, high); }
 
+    void set_render_interleaved_only_volumes(const RenderInterleavedOnlyVolumes& render_interleaved_only_volumes) { _render_interleaved_only_volumes = render_interleaved_only_volumes; }
+
 private:
     GLVolumeCollection(const GLVolumeCollection &other);
     GLVolumeCollection& operator=(const GLVolumeCollection &);
@@ -359,6 +383,7 @@ class _3DScene
             Travel,
             Retraction,
             Unretraction,
+            Shell,
             Num_Geometry_Types
         };
 
@@ -457,6 +482,8 @@ private:
     static void _update_gcode_volumes_visibility(const Print& print, GLVolumeCollection& volumes);
     // generates the legend texture in dependence of the current shown view type
     static void _generate_legend_texture(const Print& print, const std::vector<float>& tool_colors);
+    // generates objects and wipe tower geometry
+    static void _load_shells(const Print& print, GLVolumeCollection& volumes, bool use_VBOs);
 };
 
 }
diff --git a/xs/xsp/Print.xsp b/xs/xsp/Print.xsp
index 4df4a5865..4f870df68 100644
--- a/xs/xsp/Print.xsp
+++ b/xs/xsp/Print.xsp
@@ -171,6 +171,7 @@ _constant()
     void set_gcode_preview_travel_visible(bool visible);
     void set_gcode_preview_retractions_visible(bool visible);
     void set_gcode_preview_unretractions_visible(bool visible);
+    void set_gcode_preview_shells_visible(bool visible);
         
     PrintRegionPtrs* regions()
         %code%{ RETVAL = &THIS->regions; %};