We are going to use a piece of square tubing for a damper under the door.  There will be a plate inside of it to control the air flow.  Today I tried to do some forging for the first time ever.  I took a round file and made it into the handle for the damper.  
I used some fire brick, a piece of car exhaust pipe, and the blower from an inflatable snowman.  My pile of scrap wood got soaked with rain so I had to weed out a few low quality osage staves for the fuel.  I enjoyed heating and shaping the metal.  Everything went pretty smooth.  I singed some hair off my arm and a piece of slag caught my shirt on fire.  I think I'll set up a permanent forge up off the ground sometime.  



I flattened out the bottom for the handle and flattened out the center part of the rod so the plate can attach to it.

After it cooled off I cut the bottom off and rounded the edges out.  I'm going to put some wood scales on it next.  
