recently ive been welding morecar body panels ranging between 0.9 and 1.2 mm im using 0.8mm wire and im usure weither id be better off using 0.6mm wire, do you think this will make a massive difference ?
I found I got on better with .8, I have read that the larger wire can help cool the pool so you don't get so much blow through on poor panels but that could be completely wrong and there is far better people on here that can advise better.
I ran 1mm only for years for a range of fabrication on light box sections of 2.5mm wall and plate up to 15mm. I've been doing less and less plate recently so I moved to 0.8mm and I'm delighted with the results on lighter stuff. A lighter wire generally makes things more controllable on thin stuff, but I've heard a lot of people complaining about feed issues if they go down to 0.6mm. 0.8mm is generally described as a good all rounder.