diff --git a/MatterControlLib/DesignTools/Primitives/CylinderObject3D.cs b/MatterControlLib/DesignTools/Primitives/CylinderObject3D.cs
index 53f45657d..48cd5f0cd 100644
--- a/MatterControlLib/DesignTools/Primitives/CylinderObject3D.cs
+++ b/MatterControlLib/DesignTools/Primitives/CylinderObject3D.cs
@@ -138,11 +138,11 @@ namespace MatterHackers.MatterControl.DesignTools
 		public string EasyModeMessage { get; set; } = "You can switch to Advanced mode to get more cylinder options.";
 
 		[MaxDecimalPlaces(2)]
-		[Slider(3, 360, snapDistance: 1)]
+		[Slider(0, 359, snapDistance: 1)]
 		public DoubleOrExpression StartingAngle { get; set; } = 0;
 
 		[MaxDecimalPlaces(2)]
-		[Slider(3, 360, snapDistance: 1)]
+		[Slider(1, 360, snapDistance: 1)]
 		public DoubleOrExpression EndingAngle { get; set; } = 360;
 
 		[MaxDecimalPlaces(2)]
@@ -177,11 +177,6 @@ namespace MatterHackers.MatterControl.DesignTools
 			var startingAngle = StartingAngle.ClampIfNotCalculated(this, 0, 360 - .01, ref valuesChanged);
 			var endingAngle = EndingAngle.ClampIfNotCalculated(this, StartingAngle.Value(this) + .01, 360, ref valuesChanged);
 
-			if (valuesChanged)
-			{
-				Invalidate(InvalidateType.DisplayValues);
-			}
-
 			using (RebuildLock())
 			{
 				using (new CenterAndHeightMaintainer(this, MaintainFlags.Origin | MaintainFlags.Bottom))
@@ -208,6 +203,8 @@ namespace MatterHackers.MatterControl.DesignTools
 					}
 				}
 			}
+			
+			Invalidate(InvalidateType.DisplayValues);
 
 			Parent?.Invalidate(new InvalidateArgs(this, InvalidateType.Mesh));
 			return Task.CompletedTask;
diff --git a/MatterControlLib/DesignTools/Primitives/RingObject3D.cs b/MatterControlLib/DesignTools/Primitives/RingObject3D.cs
index d5015bd05..564b2cac5 100644
--- a/MatterControlLib/DesignTools/Primitives/RingObject3D.cs
+++ b/MatterControlLib/DesignTools/Primitives/RingObject3D.cs
@@ -98,11 +98,11 @@ namespace MatterHackers.MatterControl.DesignTools
 		public string EasyModeMessage { get; set; } = "You can switch to Advanced mode to get more ring options.";
 
 		[MaxDecimalPlaces(2)]
-		[Slider(3, 360, snapDistance: 1)]
+		[Slider(0, 359, snapDistance: 1)]
 		public DoubleOrExpression StartingAngle { get; set; } = 0;
 
 		[MaxDecimalPlaces(2)]
-		[Slider(3, 360, snapDistance: 1)]
+		[Slider(1, 360, snapDistance: 1)]
 		public DoubleOrExpression EndingAngle { get; set; } = 360;
 
 		[EnumDisplay(Mode = EnumDisplayAttribute.PresentationMode.Buttons)]
diff --git a/MatterControlLib/DesignTools/Primitives/SphereObject3D.cs b/MatterControlLib/DesignTools/Primitives/SphereObject3D.cs
index 174f8657d..70e34e1c9 100644
--- a/MatterControlLib/DesignTools/Primitives/SphereObject3D.cs
+++ b/MatterControlLib/DesignTools/Primitives/SphereObject3D.cs
@@ -89,11 +89,11 @@ namespace MatterHackers.MatterControl.DesignTools
 		public string EasyModeMessage { get; set; } = "You can switch to Advanced mode to get more sphere options.";
 
 		[MaxDecimalPlaces(2)]
-		[Slider(3, 360, snapDistance: 1)]
+		[Slider(0, 359, snapDistance: 1)]
 		public DoubleOrExpression StartingAngle { get; set; } = 0;
 
 		[MaxDecimalPlaces(2)]
-		[Slider(3, 360, snapDistance: 1)]
+		[Slider(1, 360, snapDistance: 1)]
 		public DoubleOrExpression EndingAngle { get; set; } = 360;
 
 		[Slider(3, 180, Easing.EaseType.Quadratic, snapDistance: 1)]
diff --git a/MatterControlLib/DesignTools/Primitives/TorusObject3D.cs b/MatterControlLib/DesignTools/Primitives/TorusObject3D.cs
index 827edf5f3..2c4c6ac51 100644
--- a/MatterControlLib/DesignTools/Primitives/TorusObject3D.cs
+++ b/MatterControlLib/DesignTools/Primitives/TorusObject3D.cs
@@ -76,11 +76,11 @@ namespace MatterHackers.MatterControl.DesignTools
 		public string EasyModeMessage { get; set; } = "You can switch to Advanced mode to get more torus options.";
 
 		[MaxDecimalPlaces(2)]
-		[Slider(3, 360, snapDistance: 1)]
+		[Slider(0, 359, snapDistance: 1)]
 		public DoubleOrExpression StartingAngle { get; set; } = 0;
 
 		[MaxDecimalPlaces(2)]
-		[Slider(3, 360, snapDistance: 1)]
+		[Slider(1, 360, snapDistance: 1)]
 		public DoubleOrExpression EndingAngle { get; set; } = 360;
 
 		[Slider(3, 260, Easing.EaseType.Quadratic, snapDistance: 1)]
diff --git a/MatterControlLib/DesignTools/PublicPropertyEditor.cs b/MatterControlLib/DesignTools/PublicPropertyEditor.cs
index a30744525..459ccaf95 100644
--- a/MatterControlLib/DesignTools/PublicPropertyEditor.cs
+++ b/MatterControlLib/DesignTools/PublicPropertyEditor.cs
@@ -846,7 +846,7 @@ namespace MatterHackers.MatterControl.DesignTools
 					if (e.InvalidateType.HasFlag(InvalidateType.DisplayValues))
 					{
 						var newValue = (DoubleOrExpression)property.Value;
-						if (newValue.Expression != field.Value)
+						// if (newValue.Expression != field.Value)
 						{
 							// we should never be in the situation where there is an '=' as the in scene controls should be disabled
 							if (newValue.Expression.StartsWith("="))
@@ -921,7 +921,7 @@ namespace MatterHackers.MatterControl.DesignTools
 					if (e.InvalidateType.HasFlag(InvalidateType.DisplayValues))
 					{
 						var newValue = (IntOrExpression)property.Value;
-						if (newValue.Expression != field.Value)
+						// if (newValue.Expression != field.Value)
 						{
 							// we should never be in the situation where there is an '=' as the in scene controls should be disabled
 							if (newValue.Expression.StartsWith("="))