The Combiner is used to craft ores. For the top slot, the player can use Diamond, Redstone, Gold Dust, Iron Dust and Obsidian Dust . The bottom slot requires cobblestone. Making Ores with Obsidian Dust, Gold Dust, Platinum Dust and Iron Dust is very expensive, because the Combiner requires 2 Dust for only 1 Ore. The primary purpose for this machine would be to gain redstone and lapis lazuli.