The Simond Store Portable Propane Gas Forge Double Burner Knife and Tool Making Blacksmith Farrier Forge is a versatile tool that can be used for a variety of tasks. With a powerful burner and a durable construction, this knife is perfect for any blacksmith who wants to achieve maximum heating. The large heating zone is lined with 1 inch thick ceramic fiber blanket which is coated by Rigidizer. This material is resistant to temperatures up to 2600 degrees Fahrenheit, so you can be sure your work will stay hot for long periods of time.