Biopowered - vegetable oil and biodiesel forum
General => Chatter => Topic started by: Tony on May 14, 2012, 05:19:10 PM
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Keith are you using CO2 pubgas?
I see Hobbyweld are doing rent free £50+VAT deposit on 9.5l bottles, and will fill at £30+VAT with a tri-mix equivalent to Argoshield @ 137 bar (1300 litres). Much cheaper than those Machine Mart disposables.
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Yes pub gas,ive never tried anything else,i wonder if my welding would be better? ;D
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Out of interest, how much does a refill cost you? Do you know the pressure and cylinder volume?
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Cant really help i just ask the landlord to swap me one,i do a fair bit of work for him so i dont usually pay.
I was thinking of giving these a try if i moved away from CO2
http://www.adamsgas.co.uk/index.php?option=com_virtuemart&Itemid=54
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From what I understand using Argon with 5% CO2 is good for thin work but Argon with 15-20% CO2 is for greater penetration on thicker steel (5-6mm plus), and it's the extra CO2 that gives the extra penetration.
This was the company I was thinking of locally to me:
http://www.wellyweld.com/products/hobbyweld-5-gas-fill-charge-72531.aspx
Same sort of charges as the one you linked.
Apparently the tri-mix with 2% Oxygen makes it equivalent to BOCs expensive Argoshield.
However, if CO2 is good enough maybe I should just get a pub CO2 cylinder?
With your pure CO2 do you get deep penetration but also a fair bit of spatter?
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The CO2 is fine with what i do,it does spit a bit but the ease of replenishing makes up for that.
Not having used any other type of gas i suppose i haven't got anything to compare to but a lot of people just use CO2 and find it OK.
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My dad swears by it... but equally, my mate that builds boats swears at it, and says I should use the proper stuff!
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I've decided to be a good boy and got one of the Hobbyweld tanks of Argon + 5% CO2 and 2% Oxygen.
Currently on a borrowed regulator but one of my own is on order :)