A propane burner is a useful tool for soldering, welding and brazing. You can also use this type of burner for melting substances and performing home-maintenance chores. Easy to build yourself, a propane burner requires a minimal amount of materials, all of which can easily be found at a local hardware or machine store.
Drill a row of four 3/8-inch holes on one end of the 3/4-inch pipe. Drill the first hole 1/2 inch in from the end of the pipe. The holes should be 1/2 inch apart and should go all the way through the end of the pipe. This will serve as the burner pipe.
Drill a 1/8-inch hole (going through both sides of the pipe) perpendicularly to the 3/8-inch hole closest to the end of the 3/4-inch steel pipe. The holes should match up so that the 3/8-inch hole is directly above the 1/8-inch hole.
Use the #57 drill bit to drill a hole in the exact middle of the 1/8-inch steel pipe. This will serve as the fuel injector pipe. Be sure to center the hole because it will look straight down the burner pipe.
Slide the fuel injector pipe into the burner pipe, positioning the injector pipe so that the #57 drill bit´s hole is directly centered, looking straight down the tube.
Insert the set screw into the first 3/8-inch hole and tighten it so that it firmly holds the fuel injector pipe in place.
Attach the fuel injector pipe to the propane tank´s nozzle. Ignite the burner by opening the tank´s valve slightly. Hold a lighter under the open 3/8-inch holes until the burner ignites.
Control your burner´s flame level by adjusting the valve on the propane tank.
Make sure that the burner is facing an open space when first igniting it.