A properly adjusted gas forge will have an air/gas mixture that will create a neutral, or slightly reducing, environment inside the forge. Most of the blacksmiths use the Venturi burners for their gas forges. Their high volume and long flame length help to produce more even firings. Assembled Venturi Burner . See more ideas about forge burner, gas forge, propane forge. For me, a kiln should fire evenly, consistently, and in a reasonable time frame. Mine is fashioned very closely to Randy's.Paul came up with a great idea and that was to add a pipe union between the bell reducer and the elbow.It makes it very easy to take off and use on another forge. Thanks again. A distinction I found on Ron Reil's website, differentiating between venturi's and forced air systems, is that venturi's are nozzle burn, and forced air are chamber burn. hot spots as in a venturi burner forge and combustion is complete at the burner and not dependent on the swirling motion of a blown pipe forge. Blown air burners aka "Forced air" burners for propane and natural gas. A lot of DIY videos out there have too much brass fittings and soldering involved. These burners do not rely on the action of the gas and chimney to pull primary air into the burner. Welcome to the Primal Community! Saved by emilio. Whether using natural gas or propane, power burners are not affected by weather conditions. How tight is the seal between the venturi burner and the heat exchanger? Pottery can be a large part of your life but, you don't want a life that revolves around a kiln schedule. The cost of this services is $100.00 per hour. $80.00 Venturi burner kit FAQ. To answer your question about Venturi vs. forced air burners, I've posted a couple of paragraphs from my catalog (pg 28). First off, thanks to everyone who has responded to me in the past. The soft roar of the kiln. To purge it I drilled two 1/2" holes on each side of the valve. Getting a forge built can be challenging so don't be afraid to ask questions, I certainly had to. With my burner design, the forge environment should meet that requirement if you use a #57 or #58 jet diameter. My large blower is a squirrel cage and I have to keep it closed down or there's too much air. Metal Art Techniques. Cold clear nights. Power: Power burners are much better than Venturi burners for use with large demand natural gas kilns. The parts cost around $60 AUD without the regulator (which can be another $100). The inducer blower pulls air into the burner but they also seem to operate on the venturi principle. Aug 11, 2011 #1 Hi again, I have now made a forge to do my forge welding but I have som trouble with the fine tuning of my burners. Consulting & Design Service How is combustion achieved? The only real pitfall to the horizontal forge configuration is the inevitable hot spot created at the entry point of the burner. Using the lower range of the BTU/Hr figures we have outlined will still fire a normal kiln to the desired temperature, but will lengthen the firing time. The forge I have been using for the last 1 1/2 years is based on Indian George's design. Venturi: These burners are best when used with LP, but work well on natural gas in small kilns or with an adequate number of burners. (865) 397-2914 phone • (865) 397-1253 fax. There are times though when you may need more help. The voices in my head may not be real but they have some great ideas. They are relatively cheap and can eliminate a lot of the guess work of trying to tune a burner system. So, my step one has been building my tools and soaking up information about them. On the down side, power burners need electricity, making power failures problematic. Unlike most natural draft burners, power burners will allow true oxidation firing in a gas kiln. Plaster is fragile and does not take heat well. 3. Atmospheric burners are easier to make but a bit fussier to set up. The ribbon burner can easily be built from materials found in most shops or obtained locally. If you order in the future, your consultation fee is credited to your order. I have worked with forced air forges, just never built one. The available pressure, length of pipe run and the number of turns, pipe size, and the meter capacity all affect the amount of gas that can be delivered to the kiln. I have made a lot of changes cutting and welding to my forge thats why it is so ugly. DF AIR FORCED gas burner Full set … I only use forced air burners. whitch burner is to prefer and why is it so? Venturi burners can produce different BTU outputs with changes in pressure (see Venturi Burner page). If you use a hand drill start with a very small hole and work up. We believe this service can save you both time and money. I used the top of the tank as the front and cut a 6" square hole around the valve with an angle grinder. Jul 14, 2016 - whitch burner is to prefer and why is it so? Venturi VS Blown Burners - One Man's Opinion (Portions of a letter composed in 2002 by Ron Reil with minor editing) The burners now available of the Venturi design, both to build yourself and to buy through HybridBurners, are light-years ahead of those available a few years ago. Also, power burners do not need chimney height to create draft. If you don't know what you are doing, find someone who does. (Power burners can be supplied with a small Venturi pilot mounted to the head for this purpose). But most people seem to find making one for themselves too complicated. I used a non OPV 5 ga propane tank for my forge body. venturi burner), an orifice of 1/16” is adequate. With natural gas, ¼” seems to work well for me having 2 lbs. Remember, this charge is applied only to folks that have no plans to order equipment from us. Since there are no blowers, Venturi burners run quieter under low pressure than power burners. I can't give you specific details because I have only built venturi type burners myself. We're an independent group of craftsman drawn together by the love of steel, fire and freedom. Then I got the garden hose and filled the tank using one of the holes and the other was the vent. So, a 2” pipe times 9 equals 18 inches minimum from the burner. This is a BRIEF answer, If you need more info, feel free to give me a call. I'm just starting out in this, and such as it is there are very few "turn-key" solutions, or at least not ones I can afford. Drilling on convex surfaces is not always easy. It's time for the truth to be told and a fair chance given to the blower-based burners. Because all primary air is supplied and mixed by the blower, power burners can be more efficient. If you would like a catalog, send me your mailing address. - May (but probably not) require some tuning for your particular forge, but it's easy to do! PO Box 1086 • Dandridge, TN • 37725 Blacksmithing.. It reaches the welding temperature in all large forges and melting temperature in large furnaces. Maybe the commercial venturi burners can do a better job, but from my understanding the forced air style are much more efficient. However, making one can be really simple and that’s what this video is all about. A plaster housing for a forge is not a really good idea, if you ask me. Have you been deceived? of line pressure. Jul 26, 2018 - Explore Dale Mason's board "Venturi burners", followed by 256 people on Pinterest. I used my lathe with a ball mill bit to bore the hole in the elbow where the propane plumbs into. But, because of the large volume of such calls though, we do charge for this service. A steel housing is much better. Do a LOT of research before you try yourself. The MR750is an affordable and compact Venturi burner suitable for high fire kilns, furnaces, or Raku kilns It features flame retention within a one piece design.It is rated at 77,400 BTUs operating on propane @ 11" WC. These burners do not rely on the action of the gas and chimney to pull primary air into the burner. Forced-Air Burner Kit: This kit comes complete with everything you need to build a Forced Air burner - These burners feature a 2" body and a 1" burner tube, andare suitable for a forge size of 8" diameter and up! Forced air propane burners are very useful, especially for melting various metals. For these times, we offer a consulting service. This volume and flame length also make it possible to run kilns on two burners, replacing 4 to 6 Venturi burners. we can provide you with information or be available, by phone, to walk you through any problems that may arise. Saved from bladesmithsforum.com. In order to build this forge burner, You will need a drill, a set of bits, and a couple of files. For those folks that just want to call and talk with someone about their kiln/burner problems, we'll be glad to help. Click on image to enlarge. A coupling in the burner! Ward Burner Systems Many potentially expensive mistakes can be avoided by asking a few questions. Jul 14, 2016 - whitch burner is to prefer and why is it so? The forge is small enough that I can run the burner at under 5 psi and keep the interior at a good working temperature.However, this burner design does work well in larger forges, many large forges even use multiple burners. I'm using one now to connect my pvc hose from my blower to the top of my burner (so I can disconnect and put it on the charcoal one.). Please be careful when working with gas. As a rule of thumb, natural gas should be introduced into the air line at a distance of at least nine times the diameter of the supply pipe. NOTE: Natural gas hook up involves many variables. Twenty calls a day like this, and we don't get orders out or equipment built....so we charge our usual per hour rate with a $25.00 minimum. B-5 Venturi Burner [SHIPS MFG] $384.90 This burner is 21” long and will produce between 58,700 to 649,400 BTUs depending on the gas pressure, type of gas and size of orifice. Personal Philosophy Although generally not as efficient as power burners, they may be turned down lower for preheating. Neat forges. 8" diameter x 13" Long Horizontal Tube Forge with Forced Air or Venturi Burner The horizontal forge is a popular configuration due to the longer heat chamber, which simplifies the heat treating process somewhat for longer work pieces. Thread starter Nylund knives; Start date Aug 11, 2011; N. Nylund knives Well-Known Member. Explore. This is necessary to prevent excessive oxidation and scaling of the metal. If you are building your own forge, buying a pre-made venturi burner is a good way to go. We can supply you with burner specs., listed approvals on burner components, and other information to help you over the approval hurdles. Moderators:Shakudo2, Thomas Bog Iron Powers, Radharc 59, Stephan P, Randy Skidmore, DimeNickel, ThreeToedWolf, B Finnigan, anthony chaney, Phoenix 1967. To say the least, I am very excited about using these burners in my forges. It’s an excellent choice for professional use! While this thing looks completely overbuilt, it's just to allow enough airflow through to use very little gas. We believe it is better to have the extra BTU's than to come up short with a heavily loaded kiln during a winter drizzle. The valves allow for a greater degree of control that I ever had with the venturi. The forge's atmosphere can be adjusted by twisting the upright pipe, which varies the amout of air sucked in. When the water came to the top it was purged. -- June/28/2014 . DF (Air forced) Gas forge burner (air forced) DF is intended for large forges and furnaces. 2" of wool and I've gotten it up to welding heat but not consistently. All of our products come with technical assistance. Power burners are high efficiency forced-air blower burners equipped with a manual air shutter or an optional variable-speed motor control. This website uses cookies for functionality, analytics and advertising purposes as described in our, Primal Fires - Forging Metal in the Tradition of our Ancestors. Metal Art . Art. They allow independent control of air and gas resulting in full control from oxidation blue to reducing yellow flame. forced air vs. venturi? my current forge is using 1" pipe and a 8 qt ss stock pot for the body. Natural gas @ 7" WC produces 78,440 BTUs. As the years go by, the late night firings tend to become lonely vigils, taking us all away from family and friends. I drilled a hole in an exhaust pipe from Autozone, bent a piece of 1/8" copper tube to go into the hole and then point down the tube, hooked it to a high pressure propane reg. Please consult with us if you have any questions. Forced air burner tuning? Power burners are designed to only operate on low pressure for natural gas and low pressure for propane (14" water column or 1/2psi). Approvals: If you run into problems getting your kiln or furnace approved, give us a call. There are two types of burners available for a gas forge – Venturi and Forced Air. I was reading an article on gas furnace combustion: wardburner dot com -> forced air vs venturi burners Do gas furnace burners operate as forced air or venturi? Higher pressures reduce efficiency, but provide more flexibility than the set, high end, output of power burners. It has seen duty in several forges over the years, well worth the $100 or so dollars it cost. One of the main advantages of Venturi systems is operation without electricity. Friends brought together by the excitement of making pots. Forced air burners are more efficient but costly, loud, and less secure. Burners: There are two types of burner "blown", where the air is driven by an electric blower, and "atmospheric" or "venturi" where a high speed gas jet is used to draw in the air. Venturi Burner Tutorial This is a tutorial on how to build a simple LPG venturi burner. The air induction ports are long milled slots, providing the necessary cross-sectional area to allow the burner to draw in all the air that its advanced design is capable of. I also made an insert to hold the 1/8 NPT in place to weld it. I still am running a burner I bought from Art Anderson 12 years ago when I built my first forge. 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. For this reason our BTU/HR figures are higher than other experts. Forced Air: Power burners are much better than Venturi burners for use with large demand natural gas kilns or large demand low-pressure propane kilns. I have posted my little burner before on other forums. Forced Air vs. Venturi Burners Forced Air: Power burners are much better than Venturi burners for use with large demand natural gas kilns or large demand low-pressure propane kilns. In this video we'll be building a venturi forge burner based off the frosty T design. Jul 14, 2016 - whitch burner is to prefer and why is it so? These are some of my earliest memories of firing kilns. Thanks a great idea... just wish I'd thought of it. The forge itself can be made in any configuration…pipe, tube, fire brick or just about anything one wants to heat steel in. Venturi burners are simple, easy to operate, quiet, and safe. The chimney needs only to be high enough to remove flue gases from the kiln building or shed. 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Well for me having 2 lbs on the action of the guess work of trying to tune burner... Outputs with changes in pressure ( see venturi burner is to prefer and why is it?...