diff --git a/MatterControlLib/ApplicationView/ApplicationController.cs b/MatterControlLib/ApplicationView/ApplicationController.cs
index 427afaa72..17ffd4fb3 100644
--- a/MatterControlLib/ApplicationView/ApplicationController.cs
+++ b/MatterControlLib/ApplicationView/ApplicationController.cs
@@ -1279,7 +1279,7 @@ namespace MatterHackers.MatterControl
 						using (new SelectionMaintainer(scene))
 						{
 							scene.UndoBuffer.AddAndDo(new ReplaceCommand(new[] { sceneItem }, new[] { component }));
-						}						// Invalidate image to kick off rebuild of ImageConverter stack 
+						}						// Invalidate image to kick off rebuild of ImageConverter stack
 						imageObject.Invalidate(InvalidateType.Image);
 
 						return Task.CompletedTask;
@@ -3367,14 +3367,35 @@ If you experience adhesion problems, please re-run leveling."
 							break;
 
 						case Keys.Left:
-							// move or rotate view left
-							Offset3DView(view3D, new Vector2(-offsetDist, 0), arrowKeyOpperation);
+							if (keyEvent.Control
+								&& !printerTabPage.sceneContext.ViewState.ModelView)
+							{
+								// Decrement slider
+								printerTabPage.LayerFeaturesIndex -= 1;
+							}
+							else
+							{
+								// move or rotate view left
+								Offset3DView(view3D, new Vector2(-offsetDist, 0), arrowKeyOpperation);
+							}
+
 							keyEvent.Handled = true;
 							keyEvent.SuppressKeyPress = true;
 							break;
 
 						case Keys.Right:
-							Offset3DView(view3D, new Vector2(offsetDist, 0), arrowKeyOpperation);
+							if (keyEvent.Control
+								&& !printerTabPage.sceneContext.ViewState.ModelView)
+							{
+								// Increment slider
+								printerTabPage.LayerFeaturesIndex += 1;
+							}
+							else
+							{
+								// move or rotate view right
+								Offset3DView(view3D, new Vector2(offsetDist, 0), arrowKeyOpperation);
+							}
+
 							keyEvent.Handled = true;
 							keyEvent.SuppressKeyPress = true;
 							break;
diff --git a/MatterControlLib/PartPreviewWindow/PrinterTabPage.cs b/MatterControlLib/PartPreviewWindow/PrinterTabPage.cs
index 474993943..0d9f685c8 100644
--- a/MatterControlLib/PartPreviewWindow/PrinterTabPage.cs
+++ b/MatterControlLib/PartPreviewWindow/PrinterTabPage.cs
@@ -229,6 +229,30 @@ namespace MatterHackers.MatterControl.PartPreviewWindow
 			sceneContext.LoadedGCodeChanged += BedPlate_LoadedGCodeChanged;
 		}
 
+		public int LayerFeaturesIndex
+		{
+			get
+			{
+				var renderInfo = sceneContext.RenderInfo;
+				int layerIndex = renderInfo.EndLayerIndex - 1;
+				int featuresOnLayer = sceneContext.GCodeRenderer.GetNumFeatures(layerIndex);
+				int featureIndex = (int)(featuresOnLayer * renderInfo.FeatureToEndOnRatio0To1 + .5);
+
+				return Math.Max(0, Math.Min(featureIndex, featuresOnLayer));
+			}
+
+			set
+			{
+				var renderInfo = sceneContext.RenderInfo;
+				int layerIndex = renderInfo.EndLayerIndex - 1;
+				int featuresOnLayer = sceneContext.GCodeRenderer.GetNumFeatures(layerIndex);
+
+				var factor = (double)value / featuresOnLayer;
+
+				layerRenderRatioSlider.SecondValue = renderInfo.FeatureToEndOnRatio0To1 = Math.Max(0, Math.Min(factor, 1));
+			}
+		}
+
 		string pauseCaption = "Printer Paused".Localize();
 
 		private void ResumePrint(bool clickedOk)