go to ruffoth autojumble near york they sell full ones for 25 quid or a refill for about 16 there was a full one there on sat with regulator ::50 quidbeen to me local gas supplier and they will only let me have a 6ft bottle, i have to open an account with them, i have to rent the bottle of them for £129.00 per year and then they charge me for removal and delivery £16.00, tried the local pubs & no joy![]()
CO2 is also a bit 'dirty' to weld with, ie it spits a bit and gives a slighty jaggier weld (oh im being technical today) Try a bottle of welding gas called 'argon' and see the difference.