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Ted Ewert

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    Mill Valley, CA
  • Interests
    Building machines, metal work and photography

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  1. I beg to differ. A common plenum which feeds multiple outlets is a general description of a ribbon burner, much like the one below. I think my device fits into that category. In addition, no combustion takes place in the plenum so it can't be considered a "burner". Here's a picture of my ribbon burner as it operated in the forge. I used a screen to keep the flame at the end of the tubes: As you can see I didn't have enough air to push any more flame than that. This was early in my experimenting. Best Regards, Ted Thanks Wayne, I appreciate it
  2. Thanks for the interest. I've built a ribbon burner, although at the time I was using 3/4" pipe and couldn't figure out why it wasn't very hot... I packed Kaowool between the tubes, plus a thin ceramic board with cutouts for the tubes over that and everything stayed fairly cool. It stays cool to the touch for as long as it's on. I would recess it in the side of the inner chamber to minimize exposure, although who knows how long it would last. I'll bet it worked just fine. I was putting stainless steel screen over the burners until I tried the threaded rod. Anything w
  3. Here is the latest burner I came up with. I wanted a long, thin hot flame, so I designed the burner to compress and accelerate the gas to accomplish this. The flame burns off the tip of the inner airfoil. This is a result of adding a strip of 10-24 threaded rod to the end to create some turbulence. This prevents the flame from extending beyond the end of the burner. It also keeps it lit. The bolts are for adjusting and holding the airfoil in place so I can move it in and out to observe the effects. The airfoil is an elongated teardrop shape. Here is a picture of the flam
  4. Thanks Vern, "Most people find flame impinging directly on the steel to have negative effects" was what I was really wondering about. I've been experimenting with different types of blown burner designs and was trying to decide which one would be most suited to the new forge. If you guys find that an indirect flame with a swirl effect is best, I can design that in easily enough. Otherwise, I've read a lot of threads here on forge design and have a pretty good idea on what I need as far as that goes. Thanks for the response! Ted
  5. I have a small forge I built from traditional fire brick and mortar. It started out life as an attempt at a high temp electric oven but didn't work for obvious reasons of poor material choices. I cut some holes in it and now its a giant heat sink which happens to contain a flame. My MO is somewhere along the lines of; "Here, hold my beer I'm going to build an oven. How hard can it be!". Anyway, I'm going to build a proper forge from an air tank I have, stuff it with Kaowool and finish off the inside with some refractory cement. The question I have is: Do you guys rely on the general he
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