diff --git a/3d-viewer/3d_canvas/cinfo3d_visu.cpp b/3d-viewer/3d_canvas/cinfo3d_visu.cpp
index 154123fe94..2dd8e5545e 100644
--- a/3d-viewer/3d_canvas/cinfo3d_visu.cpp
+++ b/3d-viewer/3d_canvas/cinfo3d_visu.cpp
@@ -66,7 +66,6 @@ CINFO3D_VISU::CINFO3D_VISU() :
     m_boardCenter = SFVEC3F( 0.0f );
 
     m_boardBoudingBox.Reset();
-    m_board2dBBox3DU.Reset();
 
     m_layers_container2D.clear();
     m_layers_holes2D.clear();
@@ -462,8 +461,6 @@ void CINFO3D_VISU::createBoardPolygon()
         errmsg.append( _( "Cannot determine the board outline." ) );
         wxLogMessage( errmsg );
     }
-
-    Polygon_Calc_BBox_3DU( m_board_poly, m_board2dBBox3DU, m_biuTo3Dunits );
 }
 
 
diff --git a/3d-viewer/3d_canvas/cinfo3d_visu.h b/3d-viewer/3d_canvas/cinfo3d_visu.h
index 0660a06416..e508d7e087 100644
--- a/3d-viewer/3d_canvas/cinfo3d_visu.h
+++ b/3d-viewer/3d_canvas/cinfo3d_visu.h
@@ -550,9 +550,6 @@ class CINFO3D_VISU
     /// 3d bouding box of the pcb board in 3d units
     CBBOX   m_boardBoudingBox;
 
-    /// 2d bouding box of the pcb board in 3d units
-    CBBOX2D m_board2dBBox3DU;
-
     /// It contains polygon contours for each layer
     MAP_POLY          m_layers_poly;
 
diff --git a/3d-viewer/3d_canvas/create_3Dgraphic_brd_items.cpp b/3d-viewer/3d_canvas/create_3Dgraphic_brd_items.cpp
index b0793061d7..3d868cf614 100644
--- a/3d-viewer/3d_canvas/create_3Dgraphic_brd_items.cpp
+++ b/3d-viewer/3d_canvas/create_3Dgraphic_brd_items.cpp
@@ -62,13 +62,11 @@
 static int s_textWidth;
 static CGENERICCONTAINER2D *s_dstcontainer = NULL;
 static float s_biuTo3Dunits;
-static const CBBOX2D *s_boardBBox3DU = NULL;
 static const BOARD_ITEM *s_boardItem = NULL;
 
 // This is a call back function, used by DrawGraphicText to draw the 3D text shape:
 void addTextSegmToContainer( int x0, int y0, int xf, int yf, void* aData )
 {
-    wxASSERT( s_boardBBox3DU != NULL );
     wxASSERT( s_dstcontainer != NULL );
 
     const SFVEC2F start3DU( x0 * s_biuTo3Dunits, -y0 * s_biuTo3Dunits );
@@ -103,7 +101,6 @@ void CINFO3D_VISU::AddShapeWithClearanceToContainer( const TEXTE_PCB* aTextPCB,
     s_dstcontainer = aDstContainer;
     s_textWidth    = aTextPCB->GetThickness() + ( 2 * aClearanceValue );
     s_biuTo3Dunits = m_biuTo3Dunits;
-    s_boardBBox3DU = &m_board2dBBox3DU;
 
     // not actually used, but needed by DrawGraphicText
     const COLOR4D dummy_color = COLOR4D::BLACK;
@@ -228,7 +225,6 @@ void CINFO3D_VISU::AddGraphicsShapesWithClearanceToContainer( const MODULE* aMod
     s_boardItem    = (const BOARD_ITEM *)&aModule->Value();
     s_dstcontainer = aDstContainer;
     s_biuTo3Dunits = m_biuTo3Dunits;
-    s_boardBBox3DU = &m_board2dBBox3DU;
 
     for( unsigned ii = 0; ii < texts.size(); ++ii )
     {
diff --git a/3d-viewer/3d_rendering/3d_render_raytracing/shapes2D/cpolygon2d.cpp b/3d-viewer/3d_rendering/3d_render_raytracing/shapes2D/cpolygon2d.cpp
index 3d110bc658..54c6cc98a2 100644
--- a/3d-viewer/3d_rendering/3d_render_raytracing/shapes2D/cpolygon2d.cpp
+++ b/3d-viewer/3d_rendering/3d_render_raytracing/shapes2D/cpolygon2d.cpp
@@ -711,35 +711,6 @@ void Convert_path_polygon_to_polygon_blocks_and_dummy_blocks(
 }
 
 
-void Polygon_Calc_BBox_3DU( const SHAPE_POLY_SET &aPolysList,
-                            CBBOX2D &aOutBBox ,
-                            float aBiuTo3DunitsScale )
-{
-    aOutBBox.Reset();
-
-    for( int idx = 0; idx < aPolysList.OutlineCount(); ++idx )
-    {
-        // Each polygon in aPolysList is a polygon with holes
-        const SHAPE_POLY_SET::POLYGON& curr_polywithholes = aPolysList.CPolygon( idx );
-
-        for( unsigned ipoly = 0; ipoly < curr_polywithholes.size(); ++ipoly )
-        {
-            const SHAPE_LINE_CHAIN& path = curr_polywithholes[ipoly]; // a simple polygon
-
-             for( int jj = 0; jj < path.PointCount(); jj++ )
-             {
-                 const VECTOR2I& a = path.CPoint( jj );
-
-                 aOutBBox.Union( SFVEC2F( (float) a.x * aBiuTo3DunitsScale,
-                                          (float)-a.y * aBiuTo3DunitsScale ) );
-             }
-        }
-    }
-
-    aOutBBox.ScaleNextUp();
-}
-
-
 #ifdef DEBUG
 static void polygon_Convert( const ClipperLib::Path &aPath,
                              SEGMENTS &aOutSegment,
diff --git a/3d-viewer/3d_rendering/3d_render_raytracing/shapes2D/cpolygon2d.h b/3d-viewer/3d_rendering/3d_render_raytracing/shapes2D/cpolygon2d.h
index 98a6f74121..9f873177c1 100644
--- a/3d-viewer/3d_rendering/3d_render_raytracing/shapes2D/cpolygon2d.h
+++ b/3d-viewer/3d_rendering/3d_render_raytracing/shapes2D/cpolygon2d.h
@@ -150,10 +150,6 @@ void Convert_path_polygon_to_polygon_blocks_and_dummy_blocks(
         float aDivFactor,
         const BOARD_ITEM &aBoardItem );
 
-void Polygon_Calc_BBox_3DU( const SHAPE_POLY_SET &aPolysList,
-                            CBBOX2D &aOutBBox,
-                            float aBiuTo3DunitsScale );
-
 void Polygon2d_TestModule();
 
 #endif // _CPOLYGON2D_H_