diff --git a/MatterControlLib/PartPreviewWindow/SceneViewer/FloorDrawable.cs b/MatterControlLib/PartPreviewWindow/SceneViewer/FloorDrawable.cs
index a6a758fb9..5373e4b77 100644
--- a/MatterControlLib/PartPreviewWindow/SceneViewer/FloorDrawable.cs
+++ b/MatterControlLib/PartPreviewWindow/SceneViewer/FloorDrawable.cs
@@ -89,8 +89,9 @@ namespace MatterHackers.MatterControl.PartPreviewWindow
 		public DrawStage DrawStage { get; } = DrawStage.First;
 
 		public bool LookingDownOnBed { get; set; }
+        public bool SelectedObjectUnderBed { get; set; }
 
-		public void Draw(GuiWidget sender, DrawEventArgs e, Matrix4X4 itemMaxtrix, WorldView world)
+        public void Draw(GuiWidget sender, DrawEventArgs e, Matrix4X4 itemMaxtrix, WorldView world)
 		{
 			if (!sceneContext.RendererOptions.RenderBed)
 			{
@@ -101,13 +102,24 @@ namespace MatterHackers.MatterControl.PartPreviewWindow
 			{
 				this.EnsureBedTexture(sceneContext.Scene.SelectedItem);
 
+				var alpha = 255;
+				if (SelectedObjectUnderBed)
+                {
+					alpha = 200;
+                }
+				if (!LookingDownOnBed)
+				{
+					alpha = 32;
+				}
+
+				GL.Disable(EnableCap.Lighting);
 				GLHelper.Render(
 					sceneContext.Mesh,
-					theme.UnderBedColor.WithAlpha(32),
+					Color.White.WithAlpha(alpha),
 					RenderTypes.Shaded,
 					world.ModelviewMatrix,
-					blendTexture: !this.LookingDownOnBed,
 					forceCullBackFaces: false);
+				GL.Enable(EnableCap.Lighting);
 
 				if (sceneContext.PrinterShape != null)
 				{
diff --git a/MatterControlLib/PartPreviewWindow/View3D/Gui3D/MoveInZControl.cs b/MatterControlLib/PartPreviewWindow/View3D/Gui3D/MoveInZControl.cs
index 848c94d5c..32cc49ddb 100644
--- a/MatterControlLib/PartPreviewWindow/View3D/Gui3D/MoveInZControl.cs
+++ b/MatterControlLib/PartPreviewWindow/View3D/Gui3D/MoveInZControl.cs
@@ -214,8 +214,10 @@ namespace MatterHackers.MatterControl.PartPreviewWindow
 
 				zHeightDisplayInfo.Visible = true;
 
-				double distanceToHit = Vector3Ex.Dot(mouseEvent3D.info.HitPosition, mouseEvent3D.MouseRay.directionNormal);
-				hitPlane = new PlaneShape(mouseEvent3D.MouseRay.directionNormal, distanceToHit, null);
+				var upNormal = Vector3.UnitZ;
+				var sideNormal = upNormal.Cross(mouseEvent3D.MouseRay.directionNormal).GetNormal();
+				var planeNormal = upNormal.Cross(sideNormal).GetNormal();
+				hitPlane = new PlaneShape(new Plane(planeNormal, mouseEvent3D.info.HitPosition), null);
 
 				initialHitPosition = mouseEvent3D.info.HitPosition;
 				transformOnMouseDown = selectedItem.Matrix;
diff --git a/MatterControlLib/PartPreviewWindow/View3D/Object3DControlsLayer.cs b/MatterControlLib/PartPreviewWindow/View3D/Object3DControlsLayer.cs
index 1f0e7ee66..318c65fc7 100644
--- a/MatterControlLib/PartPreviewWindow/View3D/Object3DControlsLayer.cs
+++ b/MatterControlLib/PartPreviewWindow/View3D/Object3DControlsLayer.cs
@@ -1126,11 +1126,21 @@ namespace MatterHackers.MatterControl.PartPreviewWindow
 
 			var bedNormalInViewSpace = Vector3Ex.TransformNormal(Vector3.UnitZ, World.ModelviewMatrix).GetNormal();
 			var pointOnBedInViewSpace = Vector3Ex.Transform(new Vector3(10, 10, 0), World.ModelviewMatrix);
-			var lookingDownOnBed = Vector3Ex.Dot(bedNormalInViewSpace, pointOnBedInViewSpace) < 0;
+			floorDrawable.LookingDownOnBed = Vector3Ex.Dot(bedNormalInViewSpace, pointOnBedInViewSpace) < 0;
 
-			floorDrawable.LookingDownOnBed = lookingDownOnBed;
+			floorDrawable.SelectedObjectUnderBed = false;
+			if (selectedItem != null)
+			{
+				var aabb = selectedItem.GetAxisAlignedBoundingBox();
+				if (aabb.MinXYZ.Z < 0)
+				{
+					floorDrawable.SelectedObjectUnderBed = true;
+				}
+			}
 
-			if (lookingDownOnBed)
+			var renderBedTransparent = !floorDrawable.LookingDownOnBed || floorDrawable.SelectedObjectUnderBed;
+
+			if (renderBedTransparent)
 			{
 				floorDrawable.Draw(this, e, Matrix4X4.Identity, this.World);
 			}
@@ -1174,7 +1184,7 @@ namespace MatterHackers.MatterControl.PartPreviewWindow
 					forceCullBackFaces: false);
 			}
 
-			if (!lookingDownOnBed)
+			if (!renderBedTransparent)
 			{
 				floorDrawable.Draw(this, e, Matrix4X4.Identity, this.World);
 			}