diff --git a/src/slic3r/GUI/3DBed.cpp b/src/slic3r/GUI/3DBed.cpp
index 41306c88ad..bc0b1ca4b2 100644
--- a/src/slic3r/GUI/3DBed.cpp
+++ b/src/slic3r/GUI/3DBed.cpp
@@ -85,7 +85,6 @@ bool Bed3D::set_shape(const Pointfs& bed_shape, const double max_print_height, c
     const BoundingBox bbox = m_contour.contour.bounding_box();
     if (!bbox.defined)
         throw RuntimeError(std::string("Invalid bed shape"));
-    m_polygon = offset(m_contour.contour, (float)bbox.radius() * 1.7f, jtRound, scale_(0.5)).front();
 
     m_triangles.reset();
     m_gridlines.reset();
@@ -104,16 +103,6 @@ bool Bed3D::set_shape(const Pointfs& bed_shape, const double max_print_height, c
     return true;
 }
 
-bool Bed3D::contains(const Point& point) const
-{
-    return m_polygon.contains(point);
-}
-
-Point Bed3D::point_projection(const Point& point) const
-{
-    return m_polygon.point_projection(point);
-}
-
 void Bed3D::render(GLCanvas3D& canvas, const Transform3d& view_matrix, const Transform3d& projection_matrix, bool bottom, float scale_factor, bool show_texture)
 {
     render_internal(canvas, view_matrix, projection_matrix, bottom, scale_factor, show_texture, false);
diff --git a/src/slic3r/GUI/3DBed.hpp b/src/slic3r/GUI/3DBed.hpp
index 1b004bfb80..1fea354cda 100644
--- a/src/slic3r/GUI/3DBed.hpp
+++ b/src/slic3r/GUI/3DBed.hpp
@@ -41,8 +41,6 @@ private:
     BoundingBoxf3 m_extended_bounding_box;
     // Print bed polygon
     ExPolygon m_contour;
-    // Slightly expanded print bed polygon, for collision detection.
-    Polygon m_polygon;
     GLModel m_triangles;
     GLModel m_gridlines;
     GLModel m_contourlines;
@@ -76,11 +74,6 @@ public:
     // Bounding box around the print bed, axes and model, for rendering.
     const BoundingBoxf3& extended_bounding_box() const { return m_extended_bounding_box; }
 
-    // Check against an expanded 2d bounding box.
-    //FIXME shall one check against the real build volume?
-    bool contains(const Point& point) const;
-    Point point_projection(const Point& point) const;
-
     void render(GLCanvas3D& canvas, const Transform3d& view_matrix, const Transform3d& projection_matrix, bool bottom, float scale_factor, bool show_texture);
     void render_axes();
     void render_for_picking(GLCanvas3D& canvas, const Transform3d& view_matrix, const Transform3d& projection_matrix, bool bottom, float scale_factor);