I eventually got myself sorted with a big bottle of co2 but my problem now is that the regulator is freezing up . I'm using the regulator that came with the welder . It's a 2-stage regulator with a flow contol valve & gauge fitted . I've only opened the cylinder a crack on the main valve ( as recommended by the supplier ) & tried different flow rates from 4-10 l/m but eventually the regulator will freeze up & the flow rate goes down .
Any tips on preventing this ?
Any tips on preventing this ?