Thanks for the tips! Yes, I was actually planning to go with soldering torches, but to be able to use a 20 lb. tank seemed like an advantage... also my soldering torches are quite small. I think the BTU output of these burners is higher than that of the soldering torches I have, and they would be sufficient for my mini forge (at least for heat treating steel, my main objective), but somehow, the shape of the burner tube I crafted causes too rich a flame... I was trying to figure out how to make it "poorer", so I could have a device that is one step up (all be it a little step), from a soldering torch. The orifices are quite large, but I read somewhere that a BBQ pressure regulator outputs a very low pressure, so I guess in the end, the result is the same... So you say it's completely hopeless? If it had the same BTU output like a soldering torch or a little more, I would still be interested in getting the flame "trimmed". Theoretically at least, what is my problem?