diff --git a/MatterControlLib/CustomWidgets/ExportPrintItemPage.cs b/MatterControlLib/CustomWidgets/ExportPrintItemPage.cs
index 53f65337b..0d63fc141 100644
--- a/MatterControlLib/CustomWidgets/ExportPrintItemPage.cs
+++ b/MatterControlLib/CustomWidgets/ExportPrintItemPage.cs
@@ -156,7 +156,7 @@ namespace MatterHackers.MatterControl
 
 				if (plugin is IExportWithOptions pluginWithOptions)
 				{
-					var optionPanel = pluginWithOptions.GetOptionsPanel();
+					var optionPanel = pluginWithOptions.GetOptionsPanel(libraryItems);
 					if (optionPanel != null)
 					{
 						optionPanel.HAnchor = HAnchor.Stretch;
diff --git a/MatterControlLib/Library/Export/AmfExport.cs b/MatterControlLib/Library/Export/AmfExport.cs
index a8061b881..89d5dc7a3 100644
--- a/MatterControlLib/Library/Export/AmfExport.cs
+++ b/MatterControlLib/Library/Export/AmfExport.cs
@@ -57,7 +57,7 @@ namespace MatterHackers.MatterControl.Library.Export
             var firstItem = libraryItems.OfType<ILibraryAsset>().FirstOrDefault();
             if (firstItem is ILibraryAsset libraryItem)
             {
-                bool exportSuccessful = await MeshExport.ExportMesh(libraryItem, outputPath, progress);
+                bool exportSuccessful = await MeshExport.ExportMesh(libraryItem, outputPath, true, progress);
                 if (exportSuccessful)
                 {
                     return null;
diff --git a/MatterControlLib/Library/Export/GCodeExport.cs b/MatterControlLib/Library/Export/GCodeExport.cs
index 039192934..c4bfced15 100644
--- a/MatterControlLib/Library/Export/GCodeExport.cs
+++ b/MatterControlLib/Library/Export/GCodeExport.cs
@@ -110,7 +110,7 @@ namespace MatterHackers.MatterControl.Library.Export
 
 		public virtual bool ExportPossible(ILibraryAsset libraryItem) => true;
 
-		public GuiWidget GetOptionsPanel()
+		public GuiWidget GetOptionsPanel(IEnumerable<ILibraryItem> libraryItems)
 		{
 			var container = new FlowLayoutWidget()
 			{
@@ -132,7 +132,7 @@ namespace MatterHackers.MatterControl.Library.Export
 				}
 				else
 				{
-					spiralVaseOverride = SpiralVaseOptions.FORCE_ON;
+					spiralVaseOverride = SpiralVaseOptions.USE_SETTINGS;
 				}
 			};
 			container.AddChild(spiralVaseCheckbox);
diff --git a/MatterControlLib/Library/Export/IExportPlugin.cs b/MatterControlLib/Library/Export/IExportPlugin.cs
index 958e4beba..2410b66c8 100644
--- a/MatterControlLib/Library/Export/IExportPlugin.cs
+++ b/MatterControlLib/Library/Export/IExportPlugin.cs
@@ -62,6 +62,6 @@ namespace MatterHackers.MatterControl
 
 	public interface IExportWithOptions : IExportPlugin
 	{
-		GuiWidget GetOptionsPanel();
+		GuiWidget GetOptionsPanel(IEnumerable<ILibraryItem> libraryItems);
 	}
 }
diff --git a/MatterControlLib/Library/Export/MeshExport.cs b/MatterControlLib/Library/Export/MeshExport.cs
index abcd5d6ff..0a0d2ca31 100644
--- a/MatterControlLib/Library/Export/MeshExport.cs
+++ b/MatterControlLib/Library/Export/MeshExport.cs
@@ -40,7 +40,7 @@ namespace MatterHackers.MatterControl.Library.Export
 {
 	public static class MeshExport
 	{
-		public static async Task<bool> ExportMesh(ILibraryItem source, string filePathToSave, IProgress<ProgressStatus> progress)
+		public static async Task<bool> ExportMesh(ILibraryItem source, string filePathToSave, bool mergeMeshes, IProgress<ProgressStatus> progress)
 		{
 			try
 			{
@@ -53,7 +53,7 @@ namespace MatterHackers.MatterControl.Library.Export
 				{
 					// If the content is an IObject3D, then we need to load it and MeshFileIO save to the target path
 					var content = await contentItem.GetObject3D(null);
-					return Object3D.Save(content, filePathToSave, CancellationToken.None, reportProgress: (ratio, name) =>
+					return Object3D.Save(content, filePathToSave, mergeMeshes, CancellationToken.None, reportProgress: (ratio, name) =>
                     {
 						status.Progress0To1 = ratio;
 						progress.Report(status);
@@ -82,7 +82,7 @@ namespace MatterHackers.MatterControl.Library.Export
 								IObject3D item = Object3D.Load(result.Stream, Path.GetExtension(streamContent.FileName), CancellationToken.None);
 								if (item != null)
 								{
-									return Object3D.Save(item, filePathToSave, CancellationToken.None, reportProgress: (ratio, name) =>
+									return Object3D.Save(item, filePathToSave, mergeMeshes, CancellationToken.None, reportProgress: (ratio, name) =>
                                     {
 										status.Progress0To1 = ratio;
 										progress.Report(status);
diff --git a/MatterControlLib/Library/Export/StlExport.cs b/MatterControlLib/Library/Export/StlExport.cs
index 0c3c4c0a9..af841920d 100644
--- a/MatterControlLib/Library/Export/StlExport.cs
+++ b/MatterControlLib/Library/Export/StlExport.cs
@@ -37,13 +37,16 @@ using MatterHackers.Agg;
 using MatterHackers.Agg.Image;
 using MatterHackers.Agg.Platform;
 using MatterHackers.Agg.UI;
+using MatterHackers.DataConverters3D;
 using MatterHackers.Localizations;
 
 namespace MatterHackers.MatterControl.Library.Export
 {
-    public class StlExport : IExportPlugin
+    public class StlExport : IExportPlugin, IExportWithOptions
 	{
-		public int Priority => 2;
+        private bool mergeMeshes = true;
+
+        public int Priority => 2;
 
 		public string ButtonText => "STL File".Localize();
 
@@ -79,7 +82,7 @@ namespace MatterHackers.MatterControl.Library.Export
 					first = false;
 				}
 
-				if (!await MeshExport.ExportMesh(item, filename, progress))
+				if (!await MeshExport.ExportMesh(item, filename, mergeMeshes, progress))
 				{
 					badExports.Add(item.Name);
 				}
@@ -99,5 +102,44 @@ namespace MatterHackers.MatterControl.Library.Export
 				}
 			};
 		}
+
+		public GuiWidget GetOptionsPanel(IEnumerable<ILibraryItem> libraryItems)
+		{
+			var exportMeshCount = 0;
+			foreach (var item in libraryItems.OfType<ILibraryAsset>())
+			{
+				if (item is ILibraryObject3D contentItem)
+				{
+					var object3D = contentItem.GetObject3D(null).Result;
+					exportMeshCount += object3D.VisibleMeshes().Count();
+                }
+            }
+
+            if (exportMeshCount < 2)
+            {
+				return null;
+            }
+            
+            var container = new FlowLayoutWidget()
+			{
+				Margin = new BorderDouble(left: 40, bottom: 10),
+			};
+
+			var theme = AppContext.Theme;
+
+			var unionAllPartsCheckbox = new CheckBox("Merge faces into single mesh".Localize(), theme.TextColor, 10)
+			{
+				Checked = true,
+				Cursor = Cursors.Hand,
+                ToolTipText = "Disable to expart all faces without merging".Localize()
+            };
+			unionAllPartsCheckbox.CheckedStateChanged += (s, e) =>
+			{
+				mergeMeshes = unionAllPartsCheckbox.Checked;
+			};
+			container.AddChild(unionAllPartsCheckbox);
+
+			return container;
+		}
 	}
 }
diff --git a/StaticData/Translations/Master.txt b/StaticData/Translations/Master.txt
index ce8fb208a..b7ad410ca 100644
--- a/StaticData/Translations/Master.txt
+++ b/StaticData/Translations/Master.txt
@@ -1327,6 +1327,9 @@ Translated:Direction
 English:Disable Fan For The First
 Translated:Disable Fan For The First
 
+English:Disable to expart all faces without merging
+Translated:Disable to expart all faces without merging
+
 English:Disabled: {0}
 Translated:Disabled: {0}
 
@@ -2887,6 +2890,9 @@ Translated:Medium Precision
 English:Merge
 Translated:Merge
 
+English:Merge faces into single mesh
+Translated:Merge faces into single mesh
+
 English:Merge Overlapping Lines
 Translated:Merge Overlapping Lines
 
diff --git a/Submodules/agg-sharp b/Submodules/agg-sharp
index 837ccc782..0fee6ab0d 160000
--- a/Submodules/agg-sharp
+++ b/Submodules/agg-sharp
@@ -1 +1 @@
-Subproject commit 837ccc782954724ae26d080a9b063112a70a527b
+Subproject commit 0fee6ab0d2d61107717114258b06182815bc11d7