October 23, 200916 yr I`m building a Gas Forge simular to the Gary Ford design in BluePrints, And i`m havin trouble with main Jet size please can someone help out what would be the best size to use Thanks so much in advance:confused: I`m using LPG or natural gas Edited October 23, 200916 yr by Hillbilly iron
October 23, 200916 yr Have you thought about using MIG tips instead of drilling your own orifice? They're cheap and interchangeable, and that way the tiny holes are already drilled for you. For a 1" burner, a 0.035" tip is probably about right. (Some folks would say it's too small, but the atmospheric burners I've made and played with always seem to have a tendency to run rich, so I often end up using a smaller orifice than many sources recommend.) If you must drill your own, roughly a #57 or #58 drill is in the ballpark. If you need metric conversions I'm afraid you'll have to look them up yourself. :)
October 23, 200916 yr Good catch, Thomas. And this is assuming you're running on high pressure bottled gas, not a low pressure residential NG system. (At least in this country they're low pressure.)
October 23, 200916 yr Author Ta Thomas i realised i made a mistake on the Lpg & Natural Cheers for putting it right.you were thinkin straight and i was in the clouds some place.:cool:
October 23, 200916 yr Author Cheers for the info Matt, yes i have thought of Mig tips, our Migs here in New Zealand are only .6 of a mm i thought they may have been too big.but i will get a0.035 drill and see how i get on thanks very much
October 24, 200916 yr 0.6mm is about 0.023". Give it a shot. You can always drill it out later if you turn out to need more gas.
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