diff --git a/src/Mod/Part/App/SurfaceOfExtrusionPy.xml b/src/Mod/Part/App/SurfaceOfExtrusionPy.xml
index 834fa3f92b..3efa3ca101 100644
--- a/src/Mod/Part/App/SurfaceOfExtrusionPy.xml
+++ b/src/Mod/Part/App/SurfaceOfExtrusionPy.xml
@@ -31,15 +31,5 @@
 			</Documentation>
 			<Parameter Name="BasisCurve" Type="Object"/>
 		</Attribute>
-        <Methode Name="uIso" Const="true">
-			<Documentation>
-				<UserDocu>Builds the U isoparametric curve</UserDocu>
-			</Documentation>
-		</Methode>
-        <Methode Name="vIso" Const="true">
-			<Documentation>
-				<UserDocu>Builds the V isoparametric curve</UserDocu>
-			</Documentation>
-		</Methode>
 	</PythonExport>
 </GenerateModel>
diff --git a/src/Mod/Part/App/SurfaceOfExtrusionPyImp.cpp b/src/Mod/Part/App/SurfaceOfExtrusionPyImp.cpp
index 36844f3fea..f6c317d861 100644
--- a/src/Mod/Part/App/SurfaceOfExtrusionPyImp.cpp
+++ b/src/Mod/Part/App/SurfaceOfExtrusionPyImp.cpp
@@ -151,88 +151,6 @@ void  SurfaceOfExtrusionPy::setBasisCurve(Py::Object arg)
     }
 }
 
-PyObject* SurfaceOfExtrusionPy::uIso(PyObject * args)
-{
-    double v;
-    if (!PyArg_ParseTuple(args, "d", &v))
-        return 0;
-
-    try {
-        Handle(Geom_Surface) surf = Handle(Geom_Surface)::DownCast
-            (getGeometryPtr()->handle());
-        Handle(Geom_Curve) c = surf->UIso(v);
-        if (c->IsKind(STANDARD_TYPE(Geom_TrimmedCurve))) {
-            Handle(Geom_TrimmedCurve) aCurve = Handle(Geom_TrimmedCurve)::DownCast(c);
-            return new GeometryCurvePy(new GeomTrimmedCurve(aCurve));
-        }
-        if (c->IsKind(STANDARD_TYPE(Geom_BezierCurve))) {
-            Handle(Geom_BezierCurve) aCurve = Handle(Geom_BezierCurve)::DownCast(c);
-            return new BezierCurvePy(new GeomBezierCurve(aCurve));
-        }
-        if (c->IsKind(STANDARD_TYPE(Geom_BSplineCurve))) {
-            Handle(Geom_BSplineCurve) aCurve = Handle(Geom_BSplineCurve)::DownCast(c);
-            return new BSplineCurvePy(new GeomBSplineCurve(aCurve));
-        }
-        if (c->IsKind(STANDARD_TYPE(Geom_Line))) {
-            Handle(Geom_Line) aLine = Handle(Geom_Line)::DownCast(c);
-            GeomLine* line = new GeomLine();
-            Handle(Geom_Line) this_line = Handle(Geom_Line)::DownCast
-                (line->handle());
-            this_line->SetLin(aLine->Lin());
-            return new LinePy(line);
-        }
-        PyErr_Format(PyExc_NotImplementedError, "Iso curve is of type '%s'",
-            c->DynamicType()->Name());
-        return 0;
-    }
-    catch (Standard_Failure& e) {
-
-        PyErr_SetString(PartExceptionOCCError, e.GetMessageString());
-        return 0;
-    }
-}
-
-PyObject* SurfaceOfExtrusionPy::vIso(PyObject * args)
-{
-    double v;
-    if (!PyArg_ParseTuple(args, "d", &v))
-        return 0;
-
-    try {
-        Handle(Geom_Surface) surf = Handle(Geom_Surface)::DownCast
-            (getGeometryPtr()->handle());
-        Handle(Geom_Curve) c = surf->VIso(v);
-        if (c->IsKind(STANDARD_TYPE(Geom_TrimmedCurve))) {
-            Handle(Geom_TrimmedCurve) aCurve = Handle(Geom_TrimmedCurve)::DownCast(c);
-            return new GeometryCurvePy(new GeomTrimmedCurve(aCurve));
-        }
-        if (c->IsKind(STANDARD_TYPE(Geom_BezierCurve))) {
-            Handle(Geom_BezierCurve) aCurve = Handle(Geom_BezierCurve)::DownCast(c);
-            return new BezierCurvePy(new GeomBezierCurve(aCurve));
-        }
-        if (c->IsKind(STANDARD_TYPE(Geom_BSplineCurve))) {
-            Handle(Geom_BSplineCurve) aCurve = Handle(Geom_BSplineCurve)::DownCast(c);
-            return new BSplineCurvePy(new GeomBSplineCurve(aCurve));
-        }
-        if (c->IsKind(STANDARD_TYPE(Geom_Line))) {
-            Handle(Geom_Line) aLine = Handle(Geom_Line)::DownCast(c);
-            GeomLine* line = new GeomLine();
-            Handle(Geom_Line) this_curv = Handle(Geom_Line)::DownCast
-                (line->handle());
-            this_curv->SetLin(aLine->Lin());
-            return new LinePy(line);
-        }
-        PyErr_Format(PyExc_NotImplementedError, "Iso curve is of type '%s'",
-            c->DynamicType()->Name());
-        return 0;
-    }
-    catch (Standard_Failure& e) {
-
-        PyErr_SetString(PartExceptionOCCError, e.GetMessageString());
-        return 0;
-    }
-}
-
 PyObject *SurfaceOfExtrusionPy::getCustomAttributes(const char* /*attr*/) const
 {
     return 0;