How to Build a Metalworking Gas Forge
A metal working gas forge can get hot enough to melt metals for blacksmithing. You can build iron chair legs, tools, and many other blacksmith projects. The best way to create a forge is to use a gas burner and oil drum. This will create enough heat to do most any project and it is fairly cheap to build.
Instructions
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1
Cut the top off of the barrel, then build a sheet metal form that will slide inside of the barrel. There should be at least two inches of space between the form and the inside of the barrel.
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2
Fill this space with clay or gannister, an insulating material that resists high levels of heat. Pack the gannister into the form, removing air bubbles, then let sit for at least 24 hours.
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3
Remove the form, then let the gannister cure for another three days.
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4
Drill a hole into the side of the oil drum using a metal and masonry bit to install a pipe for your gas burner. Usually the hole will be about 2 1/2 inches in diameter, but this could vary depending on the size of the gas burner you use.
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Install a section of iron pipe in this hole and then connect your gas burner to the forge.
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Cut a slot in the front of the barrel for the door, and attach solid iron hinges to the remaining plate to create a door. Then insulate the top of the oil drum by applying an inch or more of gannister, careful to leave room around the edges so the door will close.
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Attach another pair of hinges to the oil drum, and the top once it is fully dry and cured, to complete your backyard forge.
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Tips & Warnings
There may be laws in regards to operating a forge in a home, in your town. If you are operating the forge for a business, permits, and inspections may be required. Contact your town hall, or city offices to inquire about any regulations that may apply to you. Each town and city has different fire codes, and regulations for businesses, so check them out first. Always take precautions when operating any kind of forge. Keep all flammables away from the forge and out of the room including kerosene, propane, turpentine and gas, as well as solids like sawdust and wood. Ensure that the room and forge is properly ventilated. Never allow small children near the forge while it is operating.
