jlblohm Posted April 1, 2018 Share Posted April 1, 2018 I have figured out a very easy propane forge burner. I have a thread started over on the bladesmithsforum.com here is a link to it. https://www.bladesmithsforum.com/index.php?/topic/36681-very-simple-beginners-propane-forge/ Here is the most recent one i finished. I was going to do some extensive testing with it but i ended up selling it. But i will build another just because it works so well. this last picture is a bar 1/2 inch thick 1 1/2 inches wide. Quote Link to comment Share on other sites More sharing options...
jlblohm Posted April 1, 2018 Author Share Posted April 1, 2018 Quote Link to comment Share on other sites More sharing options...
Lou L Posted April 23, 2018 Share Posted April 23, 2018 I was actually thinking about doing this with the burners from my Camp Chef grill. It has three burners that operate on a Venturi. Each burner produces 30,000 BTU. In trying t9 figure out how I would protect the burner with refractory I decided it would just be easier to make a NARB. Still an interesting idea. Quote Link to comment Share on other sites More sharing options...
Frosty Posted April 23, 2018 Share Posted April 23, 2018 6 minutes ago, Lou L said: I was actually thinking about doing this with the burners from my Camp Chef grill. It has three burners that operate on a Venturi. Each burner produces 30,000 BTU. In trying t9 figure out how I would protect the burner with refractory I decided it would just be easier to make a NARB. Still an interesting idea. Use it to drive the NARB. Or you could put it in an updraft position and use hard refractory in the liner to form a nozzle flare. That should protect the inducer well enough. Hmmmm? Frosty The Lucky. Quote Link to comment Share on other sites More sharing options...
Lou L Posted April 23, 2018 Share Posted April 23, 2018 , 8 minutes ago, Frosty said: Use it to drive the NARB. Or you could put it in an updraft position and use hard refractory in the liner to form a nozzle flare. That should protect the inducer well enough. Hmmmm? Frosty The Lucky. It is to one Venturi...it is three small ones (one for each burner). I was think8ng I could put thin rods into each nozzlette on the burner, apply castable, and then yank them when it dries. My main problem is that the burners are round and I can’t visualize how I would insulate the center of them. Seriously, though, I am somewhat dead set on building your NARB design ...or paying you to make me one and ship it to the lower 48..<wink wink> Quote Link to comment Share on other sites More sharing options...
Frosty Posted April 23, 2018 Share Posted April 23, 2018 Okay, what you're calling a "venturi" is a linear inducer so we don't confuse each other more than necessary or fun. The burner itself is a multiple outlet burner, so is the NARB. Try this on for size. Stick a crayon on each nozzle on your burner burner and cover them with Kast-O-Lite 30. When set remove the crayons. Viola, forge burner! I wouldn't cast the entire existing burner ring in Kastolite just enough to provide a good heat shield long enough to work in a forge. I think you'd only need some of the existing burner ring set in the refractory, maybe use modeling clay to fill around it like the bottom of the mold "flask." I REALLY don't want to start selling NARBs. Once it started it'd be like a day job. <shudder> Frosty The Lucky. Quote Link to comment Share on other sites More sharing options...
Lou L Posted April 23, 2018 Share Posted April 23, 2018 Got it. Venturi is the process...inducer is the port at the end of a tube? Either way, I was thinking I could drill holes in the side of the forge for each outlet nozzle on the burner so it can be mounted outside the forge. Use the crayons, etc... But I was concerned that the relatively short flames it produces wouldn’t be able to make their way past the 2” of Kaowool and the 1/2” of castable. If I ditch the wool I feel like I’d have an inefficient gas hog. It’s still an idea that grabs my attention every time I start up that grill and the burners sound like a jet with pure blue flames. In open air they get the 1/4” grill grates glowing red. This is the burner (comes with 3 on a grill): It just seems like the work required to implement this would be better spent on a NARB. Quote Link to comment Share on other sites More sharing options...
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