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Step 14Firebox Air Inlet
For a fire to burn properly it needs oxygen. Here we make a simple adjustable air inlet in the side of the tank. You should try to keep the top of this inlet below the firebox grate.
Mark and cut out a rectangular piece using the hand grinder with cut off wheel. Then weld a couple small pieces of angle iron vertically on each end of the opening as in the picture. I welded a couple pieces of half inch flat on the cut out piece so that it would fill the entire area and it gave a good mechanism to use as slides inside the angle iron.
Next drill a hole through the cutout piece near the top and weld a nut over this hole. You can then use a piece of threaded rod or just a bolt to screw through the cutout piece and against the tank to hold it in position.
As you can see in the picture I also welded a piece of quarter inch round on the bottom of the opening for the cutout to rest on when closed.
Mark and cut out a rectangular piece using the hand grinder with cut off wheel. Then weld a couple small pieces of angle iron vertically on each end of the opening as in the picture. I welded a couple pieces of half inch flat on the cut out piece so that it would fill the entire area and it gave a good mechanism to use as slides inside the angle iron.
Next drill a hole through the cutout piece near the top and weld a nut over this hole. You can then use a piece of threaded rod or just a bolt to screw through the cutout piece and against the tank to hold it in position.
As you can see in the picture I also welded a piece of quarter inch round on the bottom of the opening for the cutout to rest on when closed.
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