diff --git a/lib/Slic3r/GUI.pm b/lib/Slic3r/GUI.pm
index bee7e54f5..842ff4407 100644
--- a/lib/Slic3r/GUI.pm
+++ b/lib/Slic3r/GUI.pm
@@ -13,6 +13,7 @@ use Slic3r::GUI::Notifier;
 use Slic3r::GUI::Plater;
 use Slic3r::GUI::Plater::2D;
 use Slic3r::GUI::Plater::2DToolpaths;
+use Slic3r::GUI::Plater::3D;
 use Slic3r::GUI::Plater::ObjectPartsPanel;
 use Slic3r::GUI::Plater::ObjectCutDialog;
 use Slic3r::GUI::Plater::ObjectPreviewDialog;
diff --git a/lib/Slic3r/GUI/Plater.pm b/lib/Slic3r/GUI/Plater.pm
index 9b3f92eea..600008e32 100644
--- a/lib/Slic3r/GUI/Plater.pm
+++ b/lib/Slic3r/GUI/Plater.pm
@@ -8,7 +8,7 @@ use List::Util qw(sum first);
 use Slic3r::Geometry qw(X Y Z MIN MAX scale unscale deg2rad);
 use threads::shared qw(shared_clone);
 use Wx qw(:button :cursor :dialog :filedialog :keycode :icon :font :id :listctrl :misc 
-    :panel :sizer :toolbar :window wxTheApp);
+    :panel :sizer :toolbar :window wxTheApp :notebook);
 use Wx::Event qw(EVT_BUTTON EVT_COMMAND EVT_KEY_DOWN EVT_LIST_ITEM_ACTIVATED 
     EVT_LIST_ITEM_DESELECTED EVT_LIST_ITEM_SELECTED EVT_MOUSE_EVENTS EVT_PAINT EVT_TOOL 
     EVT_CHOICE EVT_TIMER);
@@ -65,7 +65,12 @@ sub new {
         }
     });
     
-    $self->{canvas} = Slic3r::GUI::Plater::2D->new($self, [335,335], $self->{objects}, $self->{model}, $self->{config});
+    # Initialize preview notebook
+    $self->{preview_notebook} = Wx::Notebook->new($self, -1, wxDefaultPosition, [335,335], wxNB_BOTTOM);
+    
+    # Initialize 2D preview canvas
+    $self->{canvas} = Slic3r::GUI::Plater::2D->new($self->{preview_notebook}, wxDefaultSize, $self->{objects}, $self->{model}, $self->{config});
+    $self->{preview_notebook}->AddPage($self->{canvas}, '2D');
     $self->{canvas}->on_select_object(sub {
         my ($obj_idx) = @_;
         $self->select_object($obj_idx);
@@ -87,6 +92,12 @@ sub new {
         $self->update;
     });
     
+    # Initialize 3D preview canvas
+    if ($Slic3r::GUI::have_OpenGL) {
+        $self->{canvas3D} = Slic3r::GUI::Plater::3D->new($self->{preview_notebook}, $self->{objects}, $self->{model}, $self->{config});
+        $self->{preview_notebook}->AddPage($self->{canvas3D}, '3D');
+    }
+    
     # toolbar for object manipulation
     if (!&Wx::wxMSW) {
         Wx::ToolTip::Enable(1);
@@ -103,8 +114,8 @@ sub new {
         $self->{htoolbar}->AddTool(TB_45CW, "45° cw", Wx::Bitmap->new("$Slic3r::var/arrow_rotate_clockwise.png", wxBITMAP_TYPE_PNG), '');
         $self->{htoolbar}->AddTool(TB_SCALE, "Scale…", Wx::Bitmap->new("$Slic3r::var/arrow_out.png", wxBITMAP_TYPE_PNG), '');
         $self->{htoolbar}->AddTool(TB_SPLIT, "Split", Wx::Bitmap->new("$Slic3r::var/shape_ungroup.png", wxBITMAP_TYPE_PNG), '');
+        $self->{htoolbar}->AddTool(TB_VIEW, "Cut…", Wx::Bitmap->new("$Slic3r::var/package.png", wxBITMAP_TYPE_PNG), '');
         $self->{htoolbar}->AddSeparator;
-        $self->{htoolbar}->AddTool(TB_VIEW, "View/Cut…", Wx::Bitmap->new("$Slic3r::var/package.png", wxBITMAP_TYPE_PNG), '');
         $self->{htoolbar}->AddTool(TB_SETTINGS, "Settings…", Wx::Bitmap->new("$Slic3r::var/cog.png", wxBITMAP_TYPE_PNG), '');
     } else {
         my %tbar_buttons = (
@@ -337,7 +348,7 @@ sub new {
         $right_sizer->Add($object_info_sizer, 0, wxEXPAND | wxLEFT | wxRIGHT, 5);
         
         my $hsizer = Wx::BoxSizer->new(wxHORIZONTAL);
-        $hsizer->Add($self->{canvas}, 1, wxEXPAND | wxTOP, 1);
+        $hsizer->Add($self->{preview_notebook}, 1, wxEXPAND | wxTOP, 1);
         $hsizer->Add($right_sizer, 0, wxEXPAND | wxBOTTOM, 0);
         
         my $sizer = Wx::BoxSizer->new(wxVERTICAL);
@@ -558,7 +569,7 @@ sub increase {
     if ($Slic3r::GUI::Settings->{_}{autocenter}) {
         $self->arrange;
     } else {
-        $self->{canvas}->Refresh;
+        $self->update;
     }
 }
 
@@ -580,7 +591,6 @@ sub decrease {
         $self->{list}->Select($obj_idx, 1);
     }
     $self->update;
-    $self->{canvas}->Refresh;
 }
 
 sub rotate {
@@ -1151,6 +1161,7 @@ sub update {
     }
     
     $self->{canvas}->Refresh;
+    $self->{canvas3D}->update if $self->{canvas3D};
 }
 
 sub on_extruders_change {
@@ -1466,7 +1477,7 @@ sub object_menu {
     $frame->_append_menu_item($menu, "Split", 'Split the selected object into individual parts', sub {
         $self->split_object;
     });
-    $frame->_append_menu_item($menu, "View/Cut…", 'Open the 3D cutting tool', sub {
+    $frame->_append_menu_item($menu, "Cut…", 'Open the 3D cutting tool', sub {
         $self->object_cut_dialog;
     });
     $menu->AppendSeparator();
diff --git a/lib/Slic3r/GUI/Plater/3D.pm b/lib/Slic3r/GUI/Plater/3D.pm
new file mode 100644
index 000000000..adc89b2f8
--- /dev/null
+++ b/lib/Slic3r/GUI/Plater/3D.pm
@@ -0,0 +1,45 @@
+package Slic3r::GUI::Plater::3D;
+use strict;
+use warnings;
+use utf8;
+
+use List::Util qw();
+use Slic3r::Geometry qw();
+use Slic3r::Geometry::Clipper qw();
+use Wx qw(:misc :pen :brush :sizer :font :cursor wxTAB_TRAVERSAL);
+use Wx::Event qw();
+use base 'Slic3r::GUI::PreviewCanvas';
+
+sub new {
+    my $class = shift;
+    my ($parent, $objects, $model, $config) = @_;
+    
+    my $self = $class->SUPER::new($parent);
+    
+    $self->{objects}            = $objects;
+    $self->{model}              = $model;
+    $self->{config}             = $config;
+    $self->{on_select_object}   = sub {};
+    $self->{on_double_click}    = sub {};
+    $self->{on_right_click}     = sub {};
+    $self->{on_instance_moved}  = sub {};
+    
+    
+    
+    return $self;
+}
+
+sub update {
+    my ($self) = @_;
+    
+    $self->reset_objects;
+    return if $self->{model}->objects_count == 0;
+    
+    $self->set_bounding_box($self->{model}->bounding_box);
+    
+    foreach my $model_object (@{$self->{model}->objects}) {
+        $self->load_object($model_object, 1);
+    }
+}
+
+1;
diff --git a/lib/Slic3r/GUI/Plater/ObjectCutDialog.pm b/lib/Slic3r/GUI/Plater/ObjectCutDialog.pm
index 4e2d13561..bacd2fc8b 100644
--- a/lib/Slic3r/GUI/Plater/ObjectCutDialog.pm
+++ b/lib/Slic3r/GUI/Plater/ObjectCutDialog.pm
@@ -86,7 +86,8 @@ sub new {
     # right pane with preview canvas
     my $canvas;
     if ($Slic3r::GUI::have_OpenGL) {
-        $canvas = $self->{canvas} = Slic3r::GUI::PreviewCanvas->new($self, $self->{model_object});
+        $canvas = $self->{canvas} = Slic3r::GUI::PreviewCanvas->new($self);
+        $canvas->load_object($self->{model_object});
         $canvas->SetSize([500,500]);
         $canvas->SetMinSize($canvas->GetSize);
     }
diff --git a/lib/Slic3r/GUI/Plater/ObjectPartsPanel.pm b/lib/Slic3r/GUI/Plater/ObjectPartsPanel.pm
index c38c218c3..1162bffb6 100644
--- a/lib/Slic3r/GUI/Plater/ObjectPartsPanel.pm
+++ b/lib/Slic3r/GUI/Plater/ObjectPartsPanel.pm
@@ -68,7 +68,8 @@ sub new {
     # right pane with preview canvas
     my $canvas;
     if ($Slic3r::GUI::have_OpenGL) {
-        $canvas = $self->{canvas} = Slic3r::GUI::PreviewCanvas->new($self, $self->{model_object});
+        $canvas = $self->{canvas} = Slic3r::GUI::PreviewCanvas->new($self);
+        $canvas->load_object($self->{model_object});
         $canvas->SetSize([500,500]);
     }
     
diff --git a/lib/Slic3r/GUI/Plater/ObjectPreviewDialog.pm b/lib/Slic3r/GUI/Plater/ObjectPreviewDialog.pm
index 57edcedb4..71cf7cb5b 100644
--- a/lib/Slic3r/GUI/Plater/ObjectPreviewDialog.pm
+++ b/lib/Slic3r/GUI/Plater/ObjectPreviewDialog.pm
@@ -13,8 +13,11 @@ sub new {
     my $self = $class->SUPER::new($parent, -1, $params{object}->name, wxDefaultPosition, [500,500], wxDEFAULT_DIALOG_STYLE | wxRESIZE_BORDER);
     $self->{model_object} = $params{model_object};
     
+    my $canvas = Slic3r::GUI::PreviewCanvas->new($self);
+    $canvas->load_object($self->{model_object});
+    
     my $sizer = Wx::BoxSizer->new(wxVERTICAL);
-    $sizer->Add(Slic3r::GUI::PreviewCanvas->new($self, $self->{model_object}), 1, wxEXPAND, 0);
+    $sizer->Add($canvas, 1, wxEXPAND, 0);
     $self->SetSizer($sizer);
     $self->SetMinSize($self->GetSize);
     
diff --git a/lib/Slic3r/GUI/PreviewCanvas.pm b/lib/Slic3r/GUI/PreviewCanvas.pm
index c0638ddb6..297d6d643 100644
--- a/lib/Slic3r/GUI/PreviewCanvas.pm
+++ b/lib/Slic3r/GUI/PreviewCanvas.pm
@@ -32,23 +32,25 @@ use constant COLORS => [ [1,1,0], [1,0.5,0.5], [0.5,1,0.5], [0.5,0.5,1] ];
 }
 
 sub new {
-    my ($class, $parent, $object) = @_;
+    my ($class, $parent) = @_;
     my $self = $class->SUPER::new($parent);
    
     $self->quat((0, 0, 0, 1));
     $self->sphi(45);
     $self->stheta(-45);
-
-    $self->load_object($object);
+    
+    $self->reset_objects;
     
     EVT_PAINT($self, sub {
         my $dc = Wx::PaintDC->new($self);
+        return if !@{$self->volumes};
         $self->Render($dc);
     });
     EVT_SIZE($self, sub { $self->dirty(1) });
     EVT_IDLE($self, sub {
         return unless $self->dirty;
         return if !$self->IsShownOnScreen;
+        return if !@{$self->volumes};
         $self->Resize( $self->GetSizeWH );
         $self->Refresh;
     });
@@ -79,51 +81,69 @@ sub new {
     return $self;
 }
 
-sub load_object {
-    my ($self, $object) = @_;
+sub reset_objects {
+    my ($self) = @_;
+    
+    $self->volumes([]);
+    $self->dirty(1);
+}
+
+# this method accepts a Slic3r::BoudingBox3f object
+sub set_bounding_box {
+    my ($self, $bb) = @_;
     
-    my $bb = $object->instance_bounding_box;
     my $center = $bb->center;
     $self->object_shift(Slic3r::Pointf3->new(-$center->x, -$center->y, -$bb->z_min));  #,,
     $bb->translate(@{ $self->object_shift });
     $self->object_bounding_box($bb);
+    $self->dirty(1);
+}
+
+sub load_object {
+    my ($self, $object, $all_instances) = @_;
+    
+    $self->set_bounding_box($object->instance_bounding_box)
+        if !$all_instances;
     
     # group mesh(es) by material
     my @materials = ();
-    $self->volumes([]);
     
     # sort volumes: non-modifiers first
     my @volumes = sort { ($a->modifier // 0) <=> ($b->modifier // 0) } @{$object->volumes};
     foreach my $volume (@volumes) {
-        my $mesh = $volume->mesh->clone;
-        $object->instances->[0]->transform_mesh($mesh);
-        $mesh->translate(@{ $self->object_shift });  
+        my @instances = $all_instances ? @{$object->instances} : $object->instances->[0];
+        foreach my $instance (@instances) {
+            my $mesh = $volume->mesh->clone;
+            $instance->transform_mesh($mesh);
+            $mesh->translate(@{ $self->object_shift });  
         
-        my $material_id = $volume->material_id // '_';
-        my $color_idx = first { $materials[$_] eq $material_id } 0..$#materials;
-        if (!defined $color_idx) {
-            push @materials, $material_id;
-            $color_idx = $#materials;
-        }
+            my $material_id = $volume->material_id // '_';
+            my $color_idx = first { $materials[$_] eq $material_id } 0..$#materials;
+            if (!defined $color_idx) {
+                push @materials, $material_id;
+                $color_idx = $#materials;
+            }
         
-        my $color = [ @{COLORS->[ $color_idx % scalar(@{&COLORS}) ]} ];
-        push @$color, $volume->modifier ? 0.5 : 1;
-        push @{$self->volumes}, my $v = {
-            mesh  => $mesh,
-            color => $color,
-        };
+            my $color = [ @{COLORS->[ $color_idx % scalar(@{&COLORS}) ]} ];
+            push @$color, $volume->modifier ? 0.5 : 1;
+            push @{$self->volumes}, my $v = {
+                mesh  => $mesh,
+                color => $color,
+            };
         
-        {
-            my $vertices = $mesh->vertices;
-            my @verts = map @{ $vertices->[$_] }, map @$_, @{$mesh->facets};
-            $v->{verts} = OpenGL::Array->new_list(GL_FLOAT, @verts);
-        }
+            {
+                my $vertices = $mesh->vertices;
+                my @verts = map @{ $vertices->[$_] }, map @$_, @{$mesh->facets};
+                $v->{verts} = OpenGL::Array->new_list(GL_FLOAT, @verts);
+            }
         
-        {
-            my @norms = map { @$_, @$_, @$_ } @{$mesh->normals};
-            $v->{norms} = OpenGL::Array->new_list(GL_FLOAT, @norms);
+            {
+                my @norms = map { @$_, @$_, @$_ } @{$mesh->normals};
+                $v->{norms} = OpenGL::Array->new_list(GL_FLOAT, @norms);
+            }
         }
     }
+    $self->dirty(1);
 }
 
 sub SetCuttingPlane {
diff --git a/lib/Slic3r/Model.pm b/lib/Slic3r/Model.pm
index 66f83930b..105c72ecd 100644
--- a/lib/Slic3r/Model.pm
+++ b/lib/Slic3r/Model.pm
@@ -446,6 +446,8 @@ sub bounding_box {
 sub instance_bounding_box {
     my ($self, $instance_idx) = @_;
     
+    $instance_idx //= 0;
+    
     my $mesh = $self->raw_mesh;
     $self->instances->[$instance_idx]->transform_mesh($mesh);
     return $mesh->bounding_box;
diff --git a/utils/view-mesh.pl b/utils/view-mesh.pl
index 680102405..4847da7fb 100644
--- a/utils/view-mesh.pl
+++ b/utils/view-mesh.pl
@@ -31,8 +31,8 @@ my %opt = ();
     # make sure all objects have at least one defined instance
     $model->add_default_instances;
     
-    $Slic3r::ViewMesh::object = $model->objects->[0];
     my $app = Slic3r::ViewMesh->new;
+    $app->{canvas}->load_object($model->objects->[0]);
     $app->{canvas}->SetCuttingPlane($opt{cut}) if defined $opt{cut};
     $app->MainLoop;
 }
@@ -55,16 +55,16 @@ package Slic3r::ViewMesh;
 use Wx qw(:sizer);
 use base qw(Wx::App);
 
-our $object;
-
 sub OnInit {
     my $self = shift;
     
     my $frame = Wx::Frame->new(undef, -1, 'Mesh Viewer', [-1, -1], [500, 400]);
     my $panel = Wx::Panel->new($frame, -1);
     
+    $self->{canvas} = Slic3r::GUI::PreviewCanvas->new($panel);
+    
     my $sizer = Wx::BoxSizer->new(wxVERTICAL);
-    $sizer->Add($self->{canvas} = Slic3r::GUI::PreviewCanvas->new($panel, $object), 1, wxEXPAND, 0);
+    $sizer->Add($self->{canvas}, 1, wxEXPAND, 0);
     $panel->SetSizer($sizer);
     $sizer->SetSizeHints($panel);
     
diff --git a/xs/xsp/Model.xsp b/xs/xsp/Model.xsp
index 1038b804e..aaf5c1e75 100644
--- a/xs/xsp/Model.xsp
+++ b/xs/xsp/Model.xsp
@@ -18,6 +18,8 @@
         %code%{ RETVAL = THIS->add_object(*other); %};
     void delete_object(size_t idx);
     void clear_objects();
+    size_t objects_count()
+        %code%{ RETVAL = THIS->objects.size(); %};
 
     Ref<ModelMaterial> get_material(t_model_material_id material_id)
         %code%{