diff --git a/MatterControlLib/DesignTools/Operations/DecimateObject3D.cs b/MatterControl.MeshOperations/DecimateObject3D.cs
similarity index 98%
rename from MatterControlLib/DesignTools/Operations/DecimateObject3D.cs
rename to MatterControl.MeshOperations/DecimateObject3D.cs
index 9aa4f199c..7c82de6c3 100644
--- a/MatterControlLib/DesignTools/Operations/DecimateObject3D.cs
+++ b/MatterControl.MeshOperations/DecimateObject3D.cs
@@ -37,7 +37,6 @@ using MatterHackers.DataConverters3D;
 using MatterHackers.Localizations;
 using MatterHackers.MatterControl.DesignTools.Operations;
 using MatterHackers.PolygonMesh;
-using MatterHackers.VectorMath;
 
 namespace MatterHackers.MatterControl.DesignTools
 {
@@ -139,9 +138,8 @@ namespace MatterHackers.MatterControl.DesignTools
 				TargetCount = (int)(SourcePolygonCount * TargetPercent / 100);
 			}
 
-			return ApplicationController.Instance.Tasks.Execute(
+			return TaskBuilder(
 				"Reduce".Localize(),
-				null,
 				(reporter, cancellationToken) =>
 				{
 					SourceContainer.Visible = true;
diff --git a/MatterControlLib/DesignTools/Operations/HollowOutObject3D.cs b/MatterControl.MeshOperations/HollowOutObject3D.cs
similarity index 97%
rename from MatterControlLib/DesignTools/Operations/HollowOutObject3D.cs
rename to MatterControl.MeshOperations/HollowOutObject3D.cs
index 965beab80..881322096 100644
--- a/MatterControlLib/DesignTools/Operations/HollowOutObject3D.cs
+++ b/MatterControl.MeshOperations/HollowOutObject3D.cs
@@ -28,7 +28,6 @@ either expressed or implied, of the FreeBSD Project.
 */
 
 using System;
-using System.ComponentModel;
 using System.Threading.Tasks;
 using g3;
 using MatterHackers.DataConverters3D;
@@ -89,9 +88,8 @@ namespace MatterHackers.MatterControl.DesignTools
 
 			var valuesChanged = false;
 
-			return ApplicationController.Instance.Tasks.Execute(
-				"Reduce".Localize(),
-				null,
+			return TaskBuilder(
+				"Hollow".Localize(),
 				(reporter, cancellationToken) =>
 				{
 					SourceContainer.Visible = true;
diff --git a/MatterControlLib/DesignTools/Interfaces/IPropertyGridModifier.cs b/MatterControl.MeshOperations/IPropertyGridModifier.cs
similarity index 100%
rename from MatterControlLib/DesignTools/Interfaces/IPropertyGridModifier.cs
rename to MatterControl.MeshOperations/IPropertyGridModifier.cs
diff --git a/MatterControl.MeshOperations/MatterControl.MeshOperations.csproj b/MatterControl.MeshOperations/MatterControl.MeshOperations.csproj
new file mode 100644
index 000000000..a82a21336
--- /dev/null
+++ b/MatterControl.MeshOperations/MatterControl.MeshOperations.csproj
@@ -0,0 +1,23 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>netstandard2.0</TargetFramework>
+    <Company>MatterHackers Inc.</Company>
+	<AllowUnsafeBlocks>true</AllowUnsafeBlocks>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\MatterControl.Common\MatterControl.Common.csproj">
+      <Project>{2af30557-fc50-4de3-ad1c-7eb57131a9c5}</Project>
+      <Name>MatterControl.Common</Name>
+    </ProjectReference>
+    <ProjectReference Include="..\Submodules\agg-sharp\agg\Agg.csproj">
+    </ProjectReference>
+    <ProjectReference Include="..\Submodules\agg-sharp\DataConverters3D\DataConverters3D.csproj" />
+    <ProjectReference Include="..\Submodules\agg-sharp\Localizations\Localizations.csproj" />
+    <ProjectReference Include="..\Submodules\agg-sharp\VectorMath\VectorMath.csproj">
+    </ProjectReference>
+    <ProjectReference Include="..\Submodules\geometry3Sharp\geometry3Sharp.csproj" />
+  </ItemGroup>
+
+</Project>
diff --git a/MatterControlLib/DesignTools/EditableTypes/MeshExtensions.cs b/MatterControl.MeshOperations/MeshExtensions.cs
similarity index 100%
rename from MatterControlLib/DesignTools/EditableTypes/MeshExtensions.cs
rename to MatterControl.MeshOperations/MeshExtensions.cs
diff --git a/MatterControlLib/DesignTools/Operations/OperationSourceObject3D.cs b/MatterControl.MeshOperations/OperationSourceContainerObject3D.cs
similarity index 96%
rename from MatterControlLib/DesignTools/Operations/OperationSourceObject3D.cs
rename to MatterControl.MeshOperations/OperationSourceContainerObject3D.cs
index f95913ea8..67ce56f05 100644
--- a/MatterControlLib/DesignTools/Operations/OperationSourceObject3D.cs
+++ b/MatterControl.MeshOperations/OperationSourceContainerObject3D.cs
@@ -27,19 +27,25 @@ of the authors and should not be interpreted as representing official policies,
 either expressed or implied, of the FreeBSD Project.
 */
 
+using System;
 using System.Collections.Generic;
 using System.Linq;
+using System.Threading;
+using System.Threading.Tasks;
+using MatterHackers.Agg;
 using MatterHackers.Agg.UI;
 using MatterHackers.DataConverters3D;
 using MatterHackers.DataConverters3D.UndoCommands;
 using MatterHackers.Localizations;
-using MatterHackers.MatterControl.PartPreviewWindow;
 using Newtonsoft.Json;
 
 namespace MatterHackers.MatterControl.DesignTools.Operations
 {
 	public class OperationSourceContainerObject3D : Object3D
 	{
+		public static Func<string, Func<IProgress<ProgressStatus>, CancellationToken, Task>, Task> TaskBuilder { get; set; } =
+			(name, func) => Task.Run(() => func(null, CancellationToken.None));
+
 		public override bool CanFlatten => true;
 
 		[JsonIgnore]
diff --git a/MatterControlLib/ApplicationView/ApplicationController.cs b/MatterControlLib/ApplicationView/ApplicationController.cs
index 84915d17d..0764337f7 100644
--- a/MatterControlLib/ApplicationView/ApplicationController.cs
+++ b/MatterControlLib/ApplicationView/ApplicationController.cs
@@ -692,6 +692,8 @@ namespace MatterHackers.MatterControl
 
 		private void BuildSceneOperations()
 		{
+			OperationSourceContainerObject3D.TaskBuilder = (name, func) => ApplicationController.Instance.Tasks.Execute(name, null, func);
+
 			registeredSceneOperations = new List<SceneSelectionOperation>()
 			{
 				new SceneSelectionOperation()
diff --git a/MatterControlLib/MatterControlLib.csproj b/MatterControlLib/MatterControlLib.csproj
index 5051ac0b5..9d3f50deb 100644
--- a/MatterControlLib/MatterControlLib.csproj
+++ b/MatterControlLib/MatterControlLib.csproj
@@ -62,6 +62,7 @@
 
   <ItemGroup>
     <ProjectReference Include="..\MatterControl.Common\MatterControl.Common.csproj" />
+    <ProjectReference Include="..\MatterControl.MeshOperations\MatterControl.MeshOperations.csproj" />
     <ProjectReference Include="..\MatterControl.OpenGL\MatterControl.OpenGL.csproj" />
     <ProjectReference Include="..\MatterControl.Printing\MatterControl.Printing.csproj" />
     <ProjectReference Include="..\Submodules\agg-sharp\clipper_library\clipper_library.csproj" />
diff --git a/MatterControlLib/PartPreviewWindow/View3D/SceneActions.cs b/MatterControlLib/PartPreviewWindow/View3D/SceneActions.cs
index f9a56e1b5..df5c5d2bf 100644
--- a/MatterControlLib/PartPreviewWindow/View3D/SceneActions.cs
+++ b/MatterControlLib/PartPreviewWindow/View3D/SceneActions.cs
@@ -49,24 +49,6 @@ namespace MatterHackers.MatterControl.PartPreviewWindow
 	public static class SceneActions
 	{
 		private static int pasteObjectXOffset = 5;
-		public static List<IObject3D> GetSelectedItems(this InteractiveScene scene)
-		{
-			var selectedItem = scene.SelectedItem;
-			var selectedItems = new List<IObject3D>();
-			if (selectedItem != null)
-			{
-				if (selectedItem is SelectionGroupObject3D)
-				{
-					selectedItems = selectedItem.Children.ToList();
-				}
-				else
-				{
-					selectedItems = new List<IObject3D> { selectedItem };
-				}
-			}
-
-			return selectedItems;
-		}
 
 		public static async void UngroupSelection(this InteractiveScene scene)
 		{
diff --git a/Submodules/agg-sharp b/Submodules/agg-sharp
index b09679f21..d779ceb2c 160000
--- a/Submodules/agg-sharp
+++ b/Submodules/agg-sharp
@@ -1 +1 @@
-Subproject commit b09679f215b4d91c0aa06df1396f9cfd80ae7f04
+Subproject commit d779ceb2c4f7a93b23014c7bbc117daa30579a6d
diff --git a/Tests/MatterControl.Tests/MatterControl.Tests.csproj b/Tests/MatterControl.Tests/MatterControl.Tests.csproj
index 558b0ea5d..2e9fe9e4e 100644
--- a/Tests/MatterControl.Tests/MatterControl.Tests.csproj
+++ b/Tests/MatterControl.Tests/MatterControl.Tests.csproj
@@ -90,6 +90,10 @@
       <Project>{b2b001ee-a142-4e20-acf8-ae4a9cb984f8}</Project>
       <Name>MatterControl</Name>
     </ProjectReference>
+    <ProjectReference Include="..\..\MatterControl.MeshOperations\MatterControl.MeshOperations.csproj">
+      <Project>{3ec506a5-3c23-4663-a5f3-600119361a35}</Project>
+      <Name>MatterControl.MeshOperations</Name>
+    </ProjectReference>
     <ProjectReference Include="..\..\MatterControl.Printing\MatterControl.Printing.csproj">
       <Project>{97d5ade3-c1b4-4b46-8a3e-718a4f7f079f}</Project>
       <Name>MatterControl.Printing</Name>