diff --git a/MatterControlLib/DesignTools/Operations/Path/LinearExtrudeObject3D.cs b/MatterControlLib/DesignTools/Operations/Path/LinearExtrudeObject3D.cs
index 25f44646a..abf74c4dd 100644
--- a/MatterControlLib/DesignTools/Operations/Path/LinearExtrudeObject3D.cs
+++ b/MatterControlLib/DesignTools/Operations/Path/LinearExtrudeObject3D.cs
@@ -157,6 +157,7 @@ namespace MatterHackers.MatterControl.DesignTools.Operations
 
                     if (childPaths != null)
                     {
+                        childPaths = childPaths.Union(childPaths);
                         Mesh = VertexSourceToMesh.Extrude(childPaths, height, bevel, InflatePathObject3D.GetJoinType(Style));
                         if (Mesh.Vertices.Count == 0)
                         {
diff --git a/MatterControlLib/DesignTools/Operations/Path/MergePathObject3D.cs b/MatterControlLib/DesignTools/Operations/Path/MergePathObject3D.cs
index 2f5594bd7..c01001a24 100644
--- a/MatterControlLib/DesignTools/Operations/Path/MergePathObject3D.cs
+++ b/MatterControlLib/DesignTools/Operations/Path/MergePathObject3D.cs
@@ -129,7 +129,7 @@ namespace MatterHackers.MatterControl.DesignTools.Operations
             }
 
             var first = participants.First();
-            var resultsVertexSource = first.GetVertexSource().Transform(first.Matrix);
+            var resultsVertexSource = first.GetVertexSource().Transform(first.WorldMatrix(this));
 
             var totalOperations = participants.Count() - 1;
             double amountPerOperation = 1.0 / totalOperations;
@@ -140,7 +140,7 @@ namespace MatterHackers.MatterControl.DesignTools.Operations
                 if (item != first
                     && item.GetVertexSource() != null)
                 {
-                    var itemVertexSource = item.GetVertexSource().Transform(item.Matrix);
+                    var itemVertexSource = item.GetVertexSource().Transform(item.WorldMatrix(this));
 
                     resultsVertexSource = resultsVertexSource.MergePaths(itemVertexSource, clipType);
 
diff --git a/StaticData/Translations/Master.txt b/StaticData/Translations/Master.txt
index 811c4a968..6186fc39e 100644
--- a/StaticData/Translations/Master.txt
+++ b/StaticData/Translations/Master.txt
@@ -1441,6 +1441,9 @@ Translated:Distance or Loops
 English:Do CSG
 Translated:Do CSG
 
+English:Do Subtract
+Translated:Do Subtract
+
 English:Documents
 Translated:Documents
 
diff --git a/Submodules/agg-sharp b/Submodules/agg-sharp
index f70077c6a..a05d2c24e 160000
--- a/Submodules/agg-sharp
+++ b/Submodules/agg-sharp
@@ -1 +1 @@
-Subproject commit f70077c6a25aff063ff31628ced66e19c2ab62df
+Subproject commit a05d2c24e5e73ded25fd54606c859fcc29cc3a6b