Afternoon all. I ran out of CO2 at the weekend ( I got a couple when I got my clarke 151TE and have been 'using them up' since...) so put a disposable bottle of Argon/CO2 mix on. Welds are 'cleaner' as I expected from reading the forums, but I found I had to reduce wire speed, which I didn't expect (suddenly started blowing holes in 1mm). I've also read that mix is 'cooler' and better for thin materials than CO2, so this was a surprise. Any thoughts? TIA, Brian