diff --git a/common/buildcraft/core/inventory/StackMergeHelper.java b/common/buildcraft/core/inventory/StackMergeHelper.java
new file mode 100644
index 00000000..97d7d1fd
--- /dev/null
+++ b/common/buildcraft/core/inventory/StackMergeHelper.java
@@ -0,0 +1,48 @@
+/**
+ * Copyright (c) SpaceToad, 2011
+ * http://www.mod-buildcraft.com
+ *
+ * BuildCraft is distributed under the terms of the Minecraft Mod Public
+ * License 1.0, or MMPL. Please check the contents of the license located in
+ * http://www.mod-buildcraft.com/MMPL-1.0.txt
+ */
+
+package buildcraft.core.inventory;
+
+import net.minecraft.item.ItemStack;
+
+public class StackMergeHelper {
+
+	/**
+	 * Checks if two ItemStacks are identical enough to be merged
+	 * @param stack1 - The first stack
+	 * @param stack2 - The second stack
+	 * @return true if stacks can be merged, false otherwise
+	 */
+	
+	public boolean canStacksMerge(ItemStack stack1, ItemStack stack2){
+		if (stack1 == null || stack2 == null) return false;
+		if (!stack1.isItemEqual(stack2)) return false;
+		if (!ItemStack.areItemStackTagsEqual(stack1, stack2)) return false;
+		return true;
+		
+	}
+	
+	/**
+	 * Merges mergeSource into mergeTarget
+	 * @param mergeSource - The stack to merge into mergeTarget, this stack is not modified
+	 * @param mergeTarget - The target merge, this stack is modified if doMerge is set
+	 * @param doMerge - To actually do the merge
+	 * @return The number of items that was successfully merged.
+	 */
+	public int mergeStacks(ItemStack mergeSource, ItemStack mergeTarget, boolean doMerge){
+		if (!canStacksMerge(mergeSource, mergeTarget)) return 0;
+		int mergeCount = Math.min(mergeTarget.getMaxStackSize() - mergeTarget.stackSize, mergeSource.stackSize);
+		if (mergeCount < 1) return 0;
+		if (doMerge){
+			mergeTarget.stackSize += mergeCount;
+		}
+		return mergeCount;
+	}
+		
+}