diff --git a/core/src/net/sf/openrocket/rocketcomponent/InnerTube.java b/core/src/net/sf/openrocket/rocketcomponent/InnerTube.java
index e14f99d08..4d167d58d 100644
--- a/core/src/net/sf/openrocket/rocketcomponent/InnerTube.java
+++ b/core/src/net/sf/openrocket/rocketcomponent/InnerTube.java
@@ -4,6 +4,7 @@ import java.util.ArrayList;
 import java.util.Iterator;
 import java.util.List;
 
+import net.sf.openrocket.util.BoundingBox;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
@@ -25,7 +26,7 @@ import net.sf.openrocket.util.MathUtil;
  *
  * @author Sampo Niskanen <sampo.niskanen@iki.fi>
  */
-public class InnerTube extends ThicknessRingComponent implements AxialPositionable, Clusterable, RadialParent, MotorMount {
+public class InnerTube extends ThicknessRingComponent implements AxialPositionable, BoxBounded, Clusterable, RadialParent, MotorMount {
 	private static final Translator trans = Application.getTranslator();
 	private static final Logger log = LoggerFactory.getLogger(InnerTube.class);
 	
@@ -135,6 +136,18 @@ public class InnerTube extends ThicknessRingComponent implements AxialPositionab
 		}
 	}
 	
+	public BoundingBox getInstanceBoundingBox(){
+		BoundingBox instanceBounds = new BoundingBox();
+		
+		instanceBounds.update(new Coordinate(this.getLength(), 0,0));
+		
+		final double r = getOuterRadius();
+		instanceBounds.update(new Coordinate(0,r,r));
+		instanceBounds.update(new Coordinate(0,-r,-r));
+		
+		return instanceBounds;
+	}
+	
 	@Override
 	public int getInstanceCount() {
 		return cluster.getClusterCount();
diff --git a/core/src/net/sf/openrocket/rocketcomponent/LaunchLug.java b/core/src/net/sf/openrocket/rocketcomponent/LaunchLug.java
index 0824a3aef..6eb7840bc 100644
--- a/core/src/net/sf/openrocket/rocketcomponent/LaunchLug.java
+++ b/core/src/net/sf/openrocket/rocketcomponent/LaunchLug.java
@@ -8,12 +8,13 @@ import net.sf.openrocket.preset.ComponentPreset;
 import net.sf.openrocket.preset.ComponentPreset.Type;
 import net.sf.openrocket.rocketcomponent.position.*;
 import net.sf.openrocket.startup.Application;
+import net.sf.openrocket.util.BoundingBox;
 import net.sf.openrocket.util.Coordinate;
 import net.sf.openrocket.util.MathUtil;
 
 
 
-public class LaunchLug extends ExternalComponent implements AnglePositionable, Coaxial, LineInstanceable {
+public class LaunchLug extends ExternalComponent implements AnglePositionable, BoxBounded, Coaxial, LineInstanceable {
 	
 	private static final Translator trans = Application.getTranslator();
 	
@@ -252,7 +253,20 @@ public class LaunchLug extends ExternalComponent implements AnglePositionable, C
 	public int getInstanceCount(){
 		return this.instanceCount;
 	}
-
+	
+	@Override
+	public BoundingBox getInstanceBoundingBox() {
+		BoundingBox instanceBounds = new BoundingBox();
+		
+		instanceBounds.update(new Coordinate(this.getLength(), 0,0));
+		
+		final double r = getOuterRadius();
+		instanceBounds.update(new Coordinate(0,r,r));
+		instanceBounds.update(new Coordinate(0,-r,-r));
+		
+		return instanceBounds;
+	}
+	
 	@Override
 	public String getPatternName(){
 		return (this.getInstanceCount() + "-Line");
@@ -281,5 +295,4 @@ public class LaunchLug extends ExternalComponent implements AnglePositionable, C
 	public void setAngleMethod(AngleMethod newMethod) {
 		// no-op
 	}
-
 }
diff --git a/core/src/net/sf/openrocket/rocketcomponent/RailButton.java b/core/src/net/sf/openrocket/rocketcomponent/RailButton.java
index c63b84066..88cc83198 100644
--- a/core/src/net/sf/openrocket/rocketcomponent/RailButton.java
+++ b/core/src/net/sf/openrocket/rocketcomponent/RailButton.java
@@ -13,6 +13,7 @@ import net.sf.openrocket.rocketcomponent.position.AnglePositionable;
 import net.sf.openrocket.rocketcomponent.position.AxialMethod;
 import net.sf.openrocket.rocketcomponent.position.AxialPositionable;
 import net.sf.openrocket.startup.Application;
+import net.sf.openrocket.util.BoundingBox;
 import net.sf.openrocket.util.BugException;
 import net.sf.openrocket.util.Coordinate;
 import net.sf.openrocket.util.MathUtil;
@@ -22,7 +23,7 @@ import net.sf.openrocket.util.MathUtil;
  * @author widget (Daniel Williams)
  *
  */
-public class RailButton extends ExternalComponent implements AnglePositionable, AxialPositionable, LineInstanceable {
+public class RailButton extends ExternalComponent implements AnglePositionable, AxialPositionable, BoxBounded, LineInstanceable {
 	
 	private static final Translator trans = Application.getTranslator();
 	
@@ -210,6 +211,18 @@ public class RailButton extends ExternalComponent implements AnglePositionable,
 		fireComponentChangeEvent(ComponentChangeEvent.AERODYNAMIC_CHANGE);
 	}
 	
+	public BoundingBox getInstanceBoundingBox(){
+		BoundingBox instanceBounds = new BoundingBox();
+		
+		instanceBounds.update(new Coordinate(0, this.getTotalHeight(), 0));
+		
+		final double r = this.getOuterDiameter();
+		instanceBounds.update(new Coordinate(r,r,0));
+		instanceBounds.update(new Coordinate(-r,-r,0));
+		
+		return instanceBounds;
+	}
+	
 	@Override
 	public Coordinate[] getInstanceOffsets(){
 		Coordinate[] toReturn = new Coordinate[this.getInstanceCount()];
diff --git a/core/src/net/sf/openrocket/rocketcomponent/RingComponent.java b/core/src/net/sf/openrocket/rocketcomponent/RingComponent.java
index 77e3ddeb3..1b9655e6d 100644
--- a/core/src/net/sf/openrocket/rocketcomponent/RingComponent.java
+++ b/core/src/net/sf/openrocket/rocketcomponent/RingComponent.java
@@ -4,6 +4,7 @@ import java.util.ArrayList;
 import java.util.Collection;
 import java.util.List;
 
+import net.sf.openrocket.util.BoundingBox;
 import net.sf.openrocket.util.Coordinate;
 import net.sf.openrocket.util.MathUtil;
 
@@ -16,7 +17,7 @@ import net.sf.openrocket.util.MathUtil;
  *
  * @author Sampo Niskanen <sampo.niskanen@iki.fi>
  */
-public abstract class RingComponent extends StructuralComponent implements Coaxial {
+public abstract class RingComponent extends StructuralComponent implements BoxBounded, Coaxial {
 	
 	protected boolean outerRadiusAutomatic = false;
 	protected boolean innerRadiusAutomatic = false;
@@ -111,9 +112,18 @@ public abstract class RingComponent extends StructuralComponent implements Coaxi
 		fireComponentChangeEvent(ComponentChangeEvent.MASS_CHANGE);
 	}
 	
+	public BoundingBox getInstanceBoundingBox(){
+		BoundingBox instanceBounds = new BoundingBox();
+		
+		instanceBounds.update(new Coordinate(this.getLength(), 0,0));
+		
+		final double r = getOuterRadius();
+		instanceBounds.update(new Coordinate(0,r,r));
+		instanceBounds.update(new Coordinate(0,-r,-r));
+		
+		return instanceBounds;
+	}
 	
-
-
 	/**
 	 * Return the radial position of the component.  The position is the distance
 	 * of the center of the component from the center of the parent component.