Crafting Shaped using Cobalt Obsidian, Any Blaze Rod, Cobalt Obsidian, Any Blaze Rod, Black Framed Glass, Any Blaze Rod, Cobalt Obsidian, Any Blaze Rod and Cobalt Obsidian, arranged in the pattern shown. Produces Crystal to Obsidian Furnace Upgrade.
- Inputs
- 4 × Cobalt Obsidian
- 4 × Any Blaze Rod
- Black Framed Glass
- Output
- → Crystal to Obsidian Furnace Upgrade

