Atlas Graham burner- minimum output?

M

Made_in_the_Shade

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Oct 28, 2015
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Hello, I have just finished building a small propane forge and need some helping deciding what burner to use. The forge work chamber is 4x12" with a flat floor approximately 3" wide. The interior is app 125 cubic inches. In order to forge weld I would need around 37,500btu. The graham burner output is 100k, will I be able to run the pressure low enough for general forge work and heat teating of simple carbon steels. I'm currently using 1084 from Aldo's. Thanks for any input.
 
Use the 100K burner... once the forge is at heat I can dial mine back to almost .5 psi
 
I build a forge almost the exact same dimensions back in May. I tried both the 30K and 100K burners and agree with Rick. The 30K works fine but at a high psi and will not get to welding heat (which is fine mostly anyway) in my forge.

The 100K works great and runs at very low psi. The only issue I have is the chamber is small for that burner and even at low PSI i still get a lot of dragons breath out the front and back. I'm playing with it now to see what I can do to get more air into the chamber so I can burn more efficiently all the propane inside the chamber. You will need a variable regulator 0-30 or 0-60.
 
Get both burners, and use the 30K for HT and the 100K for larger forging and welding. It tales about 30 seconds to change them.
 
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Yes. That is what works for me. I have each burner with a 2 foot propane cable pigtail. I swap them out at a ball valve. Its easy enough to do since it is not done often, but if you get quick connect fittings it could easily be a 2 minute process. So far it is not a problem for me without the QC fittings. the longest time is to loosen the 3 screws holding the burner in the holder on the forge.
 
I think I'll start with the 100k. I'm just a hobby knife maker that hasn't made any money from knives. I just keep putting more in. Thanks for all the advise.
 
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