diff --git a/src/main/java/modtweaker/mods/chisel/ChiselHelper.java b/src/main/java/modtweaker/mods/chisel/ChiselHelper.java
index c31b82d..a40b751 100644
--- a/src/main/java/modtweaker/mods/chisel/ChiselHelper.java
+++ b/src/main/java/modtweaker/mods/chisel/ChiselHelper.java
@@ -17,12 +17,24 @@ public class ChiselHelper {
 	{
 		return CarvingUtils.getChiselRegistry().getGroup(name);
 	}
+	
 	public static ICarvingGroup getGroup(IItemStack stack)
 	{
 		return CarvingUtils.getChiselRegistry().getGroup(Block.getBlockFromItem(toStack(stack).getItem()), stack.getDamage());
 	}
+	
 	public static ICarvingVariation getVariation(IItemStack stack)
 	{
 		return Carving.chisel.getVariation(Block.getBlockFromItem(toStack(stack).getItem()), stack.getDamage());
 	}
+
+	public static boolean groupContainsVariation(ICarvingGroup group, ICarvingVariation variation)
+	{
+		for(ICarvingVariation otherVariation : group.getVariations())
+		{
+			if(otherVariation.getBlock()==variation.getBlock() && otherVariation.getBlockMeta()==variation.getBlockMeta())
+				return true;
+		}
+		return false;
+	}
 }
diff --git a/src/main/java/modtweaker/mods/chisel/commands/ChiselVariationLogger.java b/src/main/java/modtweaker/mods/chisel/commands/ChiselVariationLogger.java
index f0f7e69..c1043a2 100644
--- a/src/main/java/modtweaker/mods/chisel/commands/ChiselVariationLogger.java
+++ b/src/main/java/modtweaker/mods/chisel/commands/ChiselVariationLogger.java
@@ -13,6 +13,7 @@ import com.cricketcraft.chisel.api.carving.ICarvingGroup;
 import com.cricketcraft.chisel.api.carving.ICarvingVariation;
 
 import net.minecraft.entity.EntityList;
+import net.minecraft.item.Item;
 import minetweaker.MineTweakerAPI;
 import minetweaker.MineTweakerImplementationAPI;
 import minetweaker.api.player.IPlayer;
@@ -46,7 +47,7 @@ public class ChiselVariationLogger implements ICommandFunction{
    		}
         System.out.println("Chisel Variations: " + variations.size());
         for (Entry<ICarvingVariation, ICarvingGroup>  entry: variations.entrySet()) {
-        	String stringedVariation=entry.getKey().getBlock().getUnlocalizedName()+" "+entry.getKey().getBlockMeta();
+        	String stringedVariation="<"+Item.itemRegistry.getNameForObject(Item.getItemFromBlock(entry.getKey().getBlock()))+":"+entry.getKey().getBlockMeta()+">";
         	if(arguments.length==0)
         		stringedVariation+=" "+entry.getValue().getName();
             System.out.println("Chisel Variation " + stringedVariation);
diff --git a/src/main/java/modtweaker/mods/chisel/handlers/Groups.java b/src/main/java/modtweaker/mods/chisel/handlers/Groups.java
index 9506e8d..835ef3d 100644
--- a/src/main/java/modtweaker/mods/chisel/handlers/Groups.java
+++ b/src/main/java/modtweaker/mods/chisel/handlers/Groups.java
@@ -7,6 +7,7 @@ import static modtweaker.helpers.StackHelper.areEqual;
 import com.cricketcraft.chisel.api.carving.ICarvingGroup;
 import com.cricketcraft.chisel.api.carving.ICarvingVariation;
 
+import minetweaker.IUndoableAction;
 import minetweaker.MineTweakerAPI;
 import minetweaker.api.item.IIngredient;
 import minetweaker.api.item.IItemStack;
@@ -33,8 +34,52 @@ public class Groups {
     		MineTweakerAPI.getLogger().logError("Can create variation from " + stack);
     		return;
     	}
-    	group.addVariation(variation);
+    	MineTweakerAPI.apply(new AddVariation(group,variation, stack.getDisplayName()));
     }
+    
+    static class AddVariation implements IUndoableAction {
+    	
+    	ICarvingGroup group;
+    	ICarvingVariation variation;
+    	String variationName;
+
+        public AddVariation(ICarvingGroup group,ICarvingVariation variation, String variationName) {
+            this.group=group;
+            this.variation=variation;
+            this.variationName=variationName;
+        }
+
+        @Override
+    	public void apply() {
+        	group.addVariation(variation);
+    	}
+
+    	@Override
+    	public boolean canUndo() {
+            return group != null && variation != null;
+    	}
+    	
+    	@Override
+    	public String describe() {
+            return "Adding Variation: " + variationName;
+    	}
+    	
+    	@Override
+    	public String describeUndo() {
+            return "Removing Variation: " + variationName;
+    	}
+    	
+    	@Override
+    	public void undo() {
+    		group.removeVariation(variation.getBlock(),variation.getBlockMeta());
+    	}
+    	
+    	@Override
+    	public Object getOverrideKey() {
+    		return null;
+    	}
+    }
+
 
     @ZenMethod
     public static void removeTransformation(String groupName, IItemStack stack) {
@@ -50,11 +95,57 @@ public class Groups {
     		MineTweakerAPI.getLogger().logError("Can create variation from " + stack);
     		return;
     	}
-    	if(!group.getVariations().contains(variation))
+    	if(!ChiselHelper.groupContainsVariation(group, variation))
     	{
     		MineTweakerAPI.getLogger().logError("Variation doesn't exist in group " + groupName);
     		return;
     	}
-    	group.removeVariation(variation.getBlock(),variation.getBlockMeta());
+    	MineTweakerAPI.apply(new RemoveVariation(group,variation, stack.getDisplayName()));
     }
+    
+    
+    static class RemoveVariation implements IUndoableAction {
+    	
+    	ICarvingGroup group;
+    	ICarvingVariation variation;
+    	String variationName;
+
+        public RemoveVariation(ICarvingGroup group,ICarvingVariation variation, String variationName) {
+            this.group=group;
+            this.variation=variation;
+            this.variationName=variationName;
+        }
+
+        @Override
+    	public void apply() {
+    		group.removeVariation(variation.getBlock(),variation.getBlockMeta());
+    	}
+
+    	@Override
+    	public boolean canUndo() {
+            return group != null && variation != null;
+    	}
+    	
+    	@Override
+    	public String describe() {
+            return "Removing Variation: " + variationName;
+    	}
+    	
+    	@Override
+    	public String describeUndo() {
+            return "Adding Variation: " + variationName;
+    	}
+    	
+    	@Override
+    	public void undo() {
+        	group.addVariation(variation);
+    	}
+    	
+    	@Override
+    	public Object getOverrideKey() {
+    		return null;
+    	}
+    }
+
+    
 }
diff --git a/src/main/java/modtweaker/mods/thaumcraft/commands/AspectLogger.java b/src/main/java/modtweaker/mods/thaumcraft/commands/AspectLogger.java
index 1a87f65..05a80e5 100644
--- a/src/main/java/modtweaker/mods/thaumcraft/commands/AspectLogger.java
+++ b/src/main/java/modtweaker/mods/thaumcraft/commands/AspectLogger.java
@@ -30,7 +30,7 @@ public class AspectLogger implements ICommandFunction{
     		{
     			Item item=(Item)entry.getKey().get(i);
     			
-    			itemList.add("<"+item.itemRegistry.getNameForObject(item)+":"+entry.getKey().get(i+1)+">");
+    			itemList.add("<"+Item.itemRegistry.getNameForObject(item)+":"+entry.getKey().get(i+1)+">");
     		}
     		lines.add(itemList.toString()+": "+ThaumcraftHelper.aspectsToString(entry.getValue()));
     	}