diff --git a/include/Algo/Render/GL1/topo_render.hpp b/include/Algo/Render/GL1/topo_render.hpp
index ab7dda3c623784f6a95d4817c17b239fb327ced0..6c72d79db0060de9726a1e33ee73c7cab488795a 100644
--- a/include/Algo/Render/GL1/topo_render.hpp
+++ b/include/Algo/Render/GL1/topo_render.hpp
@@ -436,16 +436,16 @@ void renderTopoGMD3(typename PFP::MAP& map, const typename PFP::TVEC3& positions
 	vecVolCenters.reserve(vecDartFaces.size()/4); // = nb of volumes for a tetra mesh
 
 	DartMarker mark(map);					// marker for darts
-//	CellMarker mVol(map, VOLUME);
-	DartMarker mVol(map);
+	CellMarker mVol(map, VOLUME);
+//	DartMarker mVol(map);
 
 	//compute barycenter and get a dart by face
 	for (Dart d = map.begin(); d != map.end(); map.next(d))
 	{
 		if(!mVol.isMarked(d))
 		{
-//			mVol.mark(d);
-			mVol.markOrbit(VOLUME,d);
+			mVol.mark(d);
+//			mVol.markOrbit(VOLUME,d);
 
 			CellMarkerStore markVert(map, VERTEX);		//marker for vertices
 			VEC3 center(0);
diff --git a/include/Topology/gmap/embeddedGMap3.h b/include/Topology/gmap/embeddedGMap3.h
index bc20aa8d364f49717f7b1272d262d9d5261c38fa..71714b0e54e8a0c680507758b134a711e9490209 100644
--- a/include/Topology/gmap/embeddedGMap3.h
+++ b/include/Topology/gmap/embeddedGMap3.h
@@ -39,21 +39,31 @@ class EmbeddedGMap3 : public GMap3
 public:
 	typedef GMap3 TOPO_MAP;
 
-	//!
-	/*!
-	 *
+	/**
+	 * The attributes attached to the vertices of the edge of d are kept on the vertices of the resulting edge
+	 * The attributes attached to the edge of d are kept on the resulting edge
+	 * The attributes attached to the volume of d are kept on the resulting volume
+	 */
+	void sewFaces(Dart d, Dart e);
+
+	/**
+	 * The attributes attached to the vertices of the old edge of d are duplicated on the vertices of both resulting edges
+	 * The attributes attached to the old edge are duplicated on both resulting edges
+	 * The attributes attached to the old volume are duplicated on both volume if a new one is created
 	 */
 	virtual void unsewFaces(Dart d);
 
-	//!
-	/*!
-	 *
+	/**
+	 * The attributes attached to the vertices of the vertices of the face of d are kept on the vertices of the resulting face
+	 * The attributes attached to the edges of the face of d are kept on the resulting face
+	 * The attributes attached to the face of d are kept on the resulting face
 	 */
 	virtual void sewVolumes(Dart d, Dart e);
 
-	//!
-	/*!
-	 *
+	/**
+	 * The attributes attached to the vertices of the old face of d are duplicated on the vertices of both resulting faces
+	 * The attributes attached to the old edges of the old face of d are duplicated on the edges of both resulting faces
+	 * The attributes attached to the old face d are duplicated on both resulting faces
 	 */
 	virtual void unsewVolumes(Dart d);
 
diff --git a/src/Topology/gmap/embeddedGMap3.cpp b/src/Topology/gmap/embeddedGMap3.cpp
index 81e7df54b20d1980f14ffd03d25655379cfb98ec..b0f4c8f0d4a46d0af56ef686ccb05ea29c4a441f 100644
--- a/src/Topology/gmap/embeddedGMap3.cpp
+++ b/src/Topology/gmap/embeddedGMap3.cpp
@@ -30,6 +30,33 @@
 namespace CGoGN
 {
 
+void EmbeddedGMap3::sewFaces(Dart d, Dart e)
+{
+	GMap3::sewFaces(d,e);
+
+	unsigned int vEmb;
+	if (isOrbitEmbedded(VERTEX))
+	{
+		vEmb = getEmbedding(VERTEX, d);
+		embedOrbit(VERTEX, d, vEmb) ;
+
+		vEmb = getEmbedding(VERTEX, beta0(d));
+		embedOrbit(VERTEX, beta0(d), vEmb) ;
+	}
+
+	if (isOrbitEmbedded(EDGE))
+	{
+		vEmb = getEmbedding(EDGE, d);
+		embedOrbit(EDGE, e, vEmb) ;
+	}
+
+	if (isOrbitEmbedded(VOLUME))
+	{
+		vEmb = getEmbedding(VOLUME, d);
+		embedOrbit(VOLUME, e, vEmb) ;
+	}
+}
+
 void EmbeddedGMap3::unsewFaces(Dart d)
 {
 	Dart e = beta2(d);
@@ -58,6 +85,15 @@ void EmbeddedGMap3::unsewFaces(Dart d)
 		embedNewCell(EDGE, e);
 		copyCell(EDGE, e, d);
 	}
+
+	if (isOrbitEmbedded(VOLUME))
+	{
+		if(!sameVolume(d,e))
+		{
+			embedNewCell(VOLUME, e);
+			copyCell(VOLUME, e, d);
+		}
+	}
 }
 
 void EmbeddedGMap3::sewVolumes(Dart d, Dart e)