hmm i would find out the say of the bottle and see how much welding you plan to do tbh might be worth while renting,
i use energas, duno if there near you mind, i have a W off them 7quid a a month rental no bed at all, bottle lasts me 5 months and thats taking seriours hammering, 30quid a refill.
i personli use there mig5 whitch iicr is 93% argon, 5% co2, 2% Oxygen, sure u seen my welding on my thread gives very good welds.
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