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**Torch Fuel Efficiency/Consumpion** Posted: 8/25/2010 8:50:26 AM

I'd like to know if anyone has done a comparison of running costs for Torches; if note, here is my more immediate query:

I have been given a Arnold Zenit 40 (Natural Gas) Torch. What a thrill! .. but.. will it work effectively on a domestic Natural Gas supply of 1.36 kPA at the meter? How much Oxygen will be needed ?

This will be the first torch setup of my very own; I still have many hours to spend developing my skills and experimenting, using Boro to make (initially) small sculptures. I know I don't need a torch this big for some time yet, but they are lovely - I learnt on one (or similar).

I'm prepared to spend my torch budget getting the Natural Gas connected to my garage/studio, but can I afford to run it? O2 is quite expensive here in Oz. The Arnold spec sheet says 'max. oxygen flow rate = 4.4 m3/hr' !! I certainly won't be using a 'max rate' but... by my calculations, that's crazy. Does that point me in the direction of using dual oxygen conentrators with reserve tank etc etc.. ?

Before I'd acquired the Zenit, I was going to buy a RedMax with Minor and have a simple O2 and LPG setup but now everything is getting overwhelming for me - technically and financially.

Or, am I getting too far ahead of myself... is it the size of the flame rather than the size of the torch that impacts on gas consumption? How much gas usage is determined by the torch design ? What/where are the efficiency considerations.
Would I have found myself heading down the Oxy-con path with the RedMax anyway ?
Thanks for any facts /feedback /ideas /links.
PS: Glassmax are you still around? .. any comments ?

**Re: Torch Fuel Efficiency/Consumpion** Posted: 8/27/2010 10:14:53 AM

I'm no authority on the subject but I would suggest using a propane oxy. setup if you are planning on working borosilicate. And as far as oxygen use, it's my understanding that it's not so much the size of the torch that is important in minding the oxygen use. It's about how big a flame you want to use, and how much pressure your running through to your torch via the oxygen cylinder.

Hope this was of some help

-Braheem

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Torch Fuel Efficiency/Consumpion

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