NateS Posted September 10, 2019 Share Posted September 10, 2019 OPStarted a 20 lb propane forge based on Wayne Coe's design with 2 3/4 inch Frosty T burners. Please let me know thoughts on burner location etc. Before I put in the ceramic wool and kast o lite. I plan on putting a shelf on front and back to hold fire bricks. Thanks! Shelf Quote Link to comment Share on other sites More sharing options...
Mikey98118 Posted September 11, 2019 Share Posted September 11, 2019 Unless you plan to use a hard refractory flame face to reach well beyond the steel shell, your exhaust openings are way too large. Quote Link to comment Share on other sites More sharing options...
J.L.S Posted September 11, 2019 Share Posted September 11, 2019 yea the forge entrances(/exhaust openings?) look huge! unless its perspective and the thing is actually not that big what i see on forges like that is that the opening is usually about the size of...a brick laid flat on its side. maybe a bit higher and a smidge longer. thats maybe...20cm x 10cm? ( 8" x4") ? I dont have a gas forge, am japanophile smith, fuigo and clay and bricks and thats all my forge needs. Quote Link to comment Share on other sites More sharing options...
NateS Posted September 12, 2019 Author Share Posted September 12, 2019 It does seem large. I have the cut offs i can weld back in. I followed Wayne Coes plan. The opening i have both firebrick and some of the insulation board that i thought about putting kast o lite face. Decisions. Quote Link to comment Share on other sites More sharing options...
NateS Posted September 13, 2019 Author Share Posted September 13, 2019 I believe this will help. Can cover with one brick for adjustment. Quote Link to comment Share on other sites More sharing options...
Mikey98118 Posted September 13, 2019 Share Posted September 13, 2019 Much better now; use bricks in front of the openings to adjust the actual opening closer to stock size, and allow spent atmosphere to exhaust between the bricks and forge shell, while bouncing radiant energy back into the forge interior, and you should do fine. Quote Link to comment Share on other sites More sharing options...
NateS Posted September 13, 2019 Author Share Posted September 13, 2019 A little bit of pull away from kast o lite/ kaowool. A few touch ups after this firms up. Hopefully I can fire this on sunday. Quote Link to comment Share on other sites More sharing options...
D.Rotblatt Posted September 14, 2019 Share Posted September 14, 2019 Looks good, don't worry about the pull away it won't make any difference. The burner nozzles (I assume that's what the 2 red projecting tubes are) should not project beyond the refractory. In fact they should be recessed a little bit into the refractory. The heat will cause the ends to oxidize and deteriorate quickly. I generally recess the ends into the refractory by 1/2" or more. I mold the liner by hand around from the nozzle end to the inside surface so the hole forms a slight widening taper. DanR Quote Link to comment Share on other sites More sharing options...
NateS Posted September 14, 2019 Author Share Posted September 14, 2019 Thanks DanR, The tubes are just forms for a small taper, i will recess the burners. Quote Link to comment Share on other sites More sharing options...
D.Rotblatt Posted September 14, 2019 Share Posted September 14, 2019 Perfect! Sorry if I assumed.... DanR Quote Link to comment Share on other sites More sharing options...
Mikey98118 Posted September 14, 2019 Share Posted September 14, 2019 What was the source of your tapered tubes? Quote Link to comment Share on other sites More sharing options...
NateS Posted September 14, 2019 Author Share Posted September 14, 2019 DanR no worries! Mikey98118, I made a crude tapered form on a wood lathe. Glued it to a piece of pipe and covered in duct tape. Not sure yet of it was effective enough. Quote Link to comment Share on other sites More sharing options...
NateS Posted September 20, 2019 Author Share Posted September 20, 2019 Idle circuit. Hopefully fire burners tomorrow and finalize cure of kast o lite. I need to add a bracket to hold the burner controls. Is it ok to weld the shell of the forge with the kaowool? Or will I mess it up? Quote Link to comment Share on other sites More sharing options...
Irondragon Forge ClayWorks Posted September 20, 2019 Share Posted September 20, 2019 Welding the outside of the shell shouldn't hurt the Kaowool. I've done it and no problem. Quote Link to comment Share on other sites More sharing options...
NateS Posted September 20, 2019 Author Share Posted September 20, 2019 Irondragon. Thank you! Quote Link to comment Share on other sites More sharing options...
NateS Posted September 30, 2019 Author Share Posted September 30, 2019 Fired the forge for the first time. Definately need to look at burner tuning. Quote Link to comment Share on other sites More sharing options...
D.Rotblatt Posted October 1, 2019 Share Posted October 1, 2019 Large door openings mean lots of heat loss, plop a brick in front of them (use insulation firebricks - the light ones not the heavy ones). Leave only enough room for the stock to slip through. Also the doors look high, heat goes up. What are the cubic inches of the interior? Looks like you used a single layer of ceramic fiber (which is OK), but if so you have a lot of space inside, which is more to heat. It will take awhile to reach full heat since you have a refractory lining on the wool. I also notice your burners are pointed right at the corner rather then higher or lower causing a swirl/vortex. As such, one side of the forge is getting hotter then the other. Sometimes that's good, as you can put the metal where you want it to heat or not heat areas. I don't see lots of dragons breath, so it's not running really rich. Others can chime in on that. Overall, a good start. There's always futzing and adjustment before you get it right DanR Quote Link to comment Share on other sites More sharing options...
Mikey98118 Posted October 1, 2019 Share Posted October 1, 2019 Considering those wide open exhaust vents, I find your forge to be quite hot! No need to look into your burners; you have a non-problem there Quote Link to comment Share on other sites More sharing options...
NateS Posted October 2, 2019 Author Share Posted October 2, 2019 DanR- it seemed to have a swirl effect in the forge.... im just happy it worked at this point. My jets are a tapped a little off. I haven't calculated the cubic inches, I will do this weekend. I am glad I put on an idle circuit. I will order the light firebrick and put in a proper shelf. Mikey- I was surprised how quick it heated up, my expectations we exceeded. It was nice to put a hammer to some steel. It has been years. I appreciate your guys' input. Ill put the metrikote on this weekend and hopefully make a few hooks or firepit tools. Quote Link to comment Share on other sites More sharing options...
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