Ray Rogers Handcrafted Knives

Building the Burner

This is the basic burner. Blown forge burners are very simple to build. You will need a blower of about 100 cfm or more, two pieces of 2" pipe threaded on both ends and about 8" or so in length, a 2" gate valve from your local hardware store, a 2" to 1" reducer (usually a 90 degree reducer), and a piece of 1" pipe about 8" or more in length. An adjustable propane regulator is needed as it would be for any forge. It should handle from 0 to 30 psi. The Red Head regulators are very popular.

Loosely assemble the two 2" pipes by attaching one to each side of the gate valve. Attach the blower to the 2" pipe on one side of the gate valve. You'll probably have to do some fabricating to accomplish this. As you can see, I used to plastic hose to attach the blower to the pipe but you can attach the blower directly to the pipe if you wish. Any method that doesn't leak is fine but keep it all as short as possible.

Attach the 2" to 1" reducer to the remaining 2" pipe which is on the opposite side of the gate valve from the blower. Put the 1" pipe on the reducer (ignore the T connector inthe picture since you should be using only one burner). That's what the burner will look like when finished.

All that remains is to attach the propane regulator to the burner. The green thing in the picture is my old Red Head regulator. A hole has been drilled and tapped in the 2" pipe on to side of the big gate valve opposite the blower. This section of pipe is the mixing chanber for the fuel/air supply.If you don't have a large tap any method that results in a leak proof connection can be used. Some guys prefer to use copper tubing and compression fittings.

Notice that there is a small ball valve between the regulator and the pipe. This is the emergency gas shut off so be sure to include this part! Also, there is a pressure gage on my regulator but having one is not absolutely necessary.

Make the fittings snug and you're done. You will be tempted to light the burner just to see it work but fight that temptation. The burning gas needs to be contained in a small area for this burner to really work correctly. Outside in the open air it tends to be erratic and unreliable, even dangerous. Now, how would I know that?

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Ray Rogers Handcrafted Knives