Similar to our beloved "One-Brick Forge", this one is from my new favourite website, www.homemadetools.net which should be the default homepage for guys liek me that believe that it's more fun to spend 25% more money building somethgin than buying it at Canadian Tire! Anyhow, here is the link to the build. Might be an efficient way to heat treat/normalize/anneal rather than firing up the big forge. http://www.instructables.com/id/How-to-Build-a-Forge-Gas/?ALLSTEPS
I can attest to that. I've been using my little two-brick forge for a couple years or more and it does a good job. I can get my small blades up to critical in a couple of minutes. For larger, thicker steel, you might consider a bigger burner.
