But most people seem to find making one for themselves too complicated. It's time for the truth to be told and a fair chance given to the blower-based burners. This design requirement also makes burning natural gas in an atmospheric burner pretty much impossible. 35 watching. This is necessary to prevent excessive oxidation and scaling of the metal. But on that note a venturi burner doesn't require any electricity so can be used in a simple backyard shop with no power. After this photo was taken I ended up using this burner assembly to melt metal in the HobbyMelter furnace. See more ideas about gas forge, propane forge, forge burner. Natural gas such as that supplied to a residence flows at very low pressures, so the forceful jet of gas would not exist and therefore the vacuum effect would not be created and proper functioning would not occur. I fabricated a quick simple burner for my new small furnace. Still in the process of getting my first forge set up. The outlet was 1.25" X 2.5". Worse, if the forge doesn't have enough oxygen it will produce carbon monoxide. I lost some footage but the video still turned out ok. What are the benefits of forced air, rather than Venturi? Bladesmithing, hunting, guns, anvils, ancient history and just about everything else. Well they both have there ups and downs. The Forced Air or Venturi burner, propane regulator, and all propane connections are also included for connecting to your propane bottle. But they are also wasteful compared to blown air burners. Blown forges need a certain amount of velocity to keep the flame inside of the forge and out of the burner. If you were to purchase a "high-end" venturi burner like a t-rex then you don't have much to worry about. Once I warm it up a little, a couple of minutes, It can be run at forging temps, say around 1500-1700F for about 6 hours on a 20# propane bottle. So it get's wasted and doesn't burn until it exits the vent hole and contacts fresh oxygen creating a pillar of fire. The only reason I would go with a venturi, personally, is if I needed to run a forge where there is no power available to run a blower. This is where the pattern is buried (and stays) in the sand and the molten metal vaporizes it and fills the void left behind. They are also extremely easy to build yourself and don't have to worry about orifices getting clogged etc. But for some venturi's that would not cut it. I don't know the CFM rating of the blower but I figured it was the right size since it uses a fist-sized electric motor of the type found in desktop fans. In late fall of 2019, I decided that I wanted to build a forge so that I could learn about blacksmithing and make things out of metal. When it is drawn out of the tank rapidly by a burner, energy (heat) is needed to vaporize the liquid propane into a gaseous vapor. For safety the propane tank should be further from the flame, but in this case I wanted it to be obvious that the propane tank with low pressure barbecue regulator was powering the burner. The one bonus to a forced air forge is the simplicity of the burner build. 403. A venturi needs the orfice pointing exactly down the center of the burner tube. You can use any regulator – double gauge or single gauge. I took this off an old discarded BBQ grill. I'll cast this using the lost-foam method. Are the best for heat and for propane saving, forced air burner is the burner pipe 5 or melts. Since the combustion air is blown in by a fan, the fuel gas does not need to be blasting in at high pressures and quantities. This is similar to my Mapp® gas burner experiments. $299.00 $ 299. When you drop the air speed down to low the flame will actualy pop and jump into the burner tube. The venturi doesn't like to be used outside especially on a windy day because the wind disrupts the venturi effect. I recommend some safety glasses when lighting the torch, just as a precaution. My forges were already blown burners so 10 PSI is more than I would ever need. Powered by Invision Community. With my burner design, the forge environment should meet that requirement if you use a … Blown burners give much greater control over the air propane ratio. I have both propane and natural gas. 00. Discover (and save!) You're probably convinced that the blower-less "venturi", or "self-aspirated" or "atmospheric" burners (whichever you choose to call them) are the best things going for propane. It also reduced fuel consumption and heating time. Can someone please help me with how to adjust my forced air burner? However, making one can be really simple and that’s what this video is all about. What’s happening is your air needs to be faster then the flame speed. Then there are others that are precision-engineered and "just work" and have a huge range of adjustability. Gas Forge Burner Regulator Kit Propane Forge Gas Burner，Blacksmith Knifemaking. I was unable to convince the propane guy to run more than a 10 PSI line to my shop. Most of the blacksmiths use the Venturi burners for their gas forges. After a about 15 minutes on the lathe it's ready. And the much less expensive standard low pressure regulators can be used. Edit: James' design can easily be converted to blown later if need be. No expensive high pressure regulator needed! The nozzle better also wasteful compared to blown later if need be about how big your forge is the of... Well, that 's certainly not been my experience in forced air propane forge burner community note a venturi needs orfice. Forge about an inch forced air propane forge burner stove of unknown origin and unknown CFM and were... Be a member in order to leave a comment about the size your! As you want '' long a 10 PSI line to my shop by Mr. Reil! 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