natenaaron Posted May 28, 2016 Share Posted May 28, 2016 I just finished my second one. It is running a 1 inch T burner and a 3/4 inch T burner. It is 1/4 of an air compressor tank lined with 2 inches of ceramic wool, and a 1/2 inch or satanite. After running with both burners for 15 minutes I sprayed water on the outside and the drops danced off. The welds holding the burner supports on blued as well. The picture is prior to the first lighting. There are 620ish cubic inches inside the forge after accounting for liner. How hot does the outside of your forge get? Should I be worried? Quote Link to comment Share on other sites More sharing options...
ThomasPowers Posted May 28, 2016 Share Posted May 28, 2016 I would expect some hot gas leakage and heat conduction around the burner holder area. Was the water test in the middle of a blank wall section? Quote Link to comment Share on other sites More sharing options...
Mikey98118 Posted May 28, 2016 Share Posted May 28, 2016 Water bounce indicates its in the four hundred range; ditto for blueing. The question is how much higher it will go if that only took a few minutes... Quote Link to comment Share on other sites More sharing options...
natenaaron Posted May 28, 2016 Author Share Posted May 28, 2016 Yes the water danced in the middle. This was a lot cooler than the inside but still. are my burners too big this time? Quote Link to comment Share on other sites More sharing options...
Buzzkill Posted May 28, 2016 Share Posted May 28, 2016 You may want to stuff some scrap kaowool around the burners in the holding tubes. That may also affect the tuning of your burners as well. My forge is smaller than that and the outside shell gets too hot to place a hand on it without injury, but has never gotten hot enough to burn the original paint off the cylinder. You can turn a big burner down quite a bit, but you can only turn a small burner up so far. You gave 622 cubic inches as your volume I think. That would put it beyond the capacity of a single 3/4" burner, but still within the range of two 3/4" burners. Quote Link to comment Share on other sites More sharing options...
Frosty Posted May 28, 2016 Share Posted May 28, 2016 Flame coming out the back opening is also wrapping around the curved end of the cylinder. Yes, you have one too many 3/4" burners. Their orientation is also aimed at each other, not directly but they're still fighting. Frosty The Lucky. Quote Link to comment Share on other sites More sharing options...
natenaaron Posted June 8, 2016 Author Share Posted June 8, 2016 I fixed the aim issue. They hit the center of their respective floor tiles. When i put the Plastech 85p floor in place it broke and would not stick back together so the one floor is now 2 square tiles each. The back is curved but goes all the way to within 1/8 inch of the floor. I guess that could be the issue. I will see tomorrow when I get the 1 inch burner replaced with a 3/4. Quote Link to comment Share on other sites More sharing options...
ytuyuty Posted June 8, 2016 Share Posted June 8, 2016 The outside of my forge is very hot Quote Link to comment Share on other sites More sharing options...
Frosty Posted June 8, 2016 Share Posted June 8, 2016 3 minutes ago, Harry Marinakis said: The outside of my forge is very hot Now I'm wondering Harry. Should I give my forge a sexy paint job too? Frosty The Lucky. Quote Link to comment Share on other sites More sharing options...
natenaaron Posted June 8, 2016 Author Share Posted June 8, 2016 Once you pay to have them upgraded and looking all sexy they become cougar forges and take off with the first hot young smith they see. Quote Link to comment Share on other sites More sharing options...
jcornell Posted June 8, 2016 Share Posted June 8, 2016 Current forge (#5) is Freon bottle with 2" kaowool with kiln wash, running with one Gensheimer burner. The original paint is burned off around the mouth and around the pass-through tube, but the main body still has the lovely blue-green shade common to Freon bottles. It's hot enough that I don't want to touch it after I've been forging for a while, but not so hot that I worry about it collapsing or warping the outer shell. Quote Link to comment Share on other sites More sharing options...
Frosty Posted June 8, 2016 Share Posted June 8, 2016 Good to know, I don't want mine running off with some young smith I'll leave it like it is. The area around the opening is going to get really hot, hotter than header paint will take let alone stove paint. If it's important enough maybe enamel it? Frosty The Lucky. Quote Link to comment Share on other sites More sharing options...
natenaaron Posted June 9, 2016 Author Share Posted June 9, 2016 I don't care about the looks. Just worried about the heat causing it to come apart. Quote Link to comment Share on other sites More sharing options...
Frosty Posted June 9, 2016 Share Posted June 9, 2016 Kidding aside. Come apart how? I don't see anything particularly vulnerable in range of the fire. Maybe the plastic covers on the needle valve but that's not a thing. Frosty The Lucky. Quote Link to comment Share on other sites More sharing options...
natenaaron Posted June 9, 2016 Author Share Posted June 9, 2016 Honestly I was worried about the welds coming apart and the burner coming out. Welds are good but being new I was not sure if cracking was possible with them getting very very hot then cooling. In the winter they will be cooling pretty rapidly. Quote Link to comment Share on other sites More sharing options...
Frosty Posted June 10, 2016 Share Posted June 10, 2016 Not a chance unless you used something like hard facing wire and quenched the beads. My burners just sit o the lid on 14ga. "washer" shaped feet I made with hole saws, mig tacked to the thread protectors I use instead of flares. Parts of the frame get so hot it warps. The only thing that's broken in the 10 years I've been using it are the light insulating fire bricks I use for walls and partitions. Frosty The Lucky. Quote Link to comment Share on other sites More sharing options...
natenaaron Posted June 10, 2016 Author Share Posted June 10, 2016 I will not worry then. Thanks Quote Link to comment Share on other sites More sharing options...
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