Picture this-- welding away building a welding bench top to cover my workmate(burnt through two already!). Anyway I ran out of wire. Using a Mighty Mig100 with 0.9 wire and having no problems. I only use this little guy outside as the fumes are horrendous but it's actually not too bad. Anyway I digress--was using Sealey wire and changed to a new roll of Sealy wire, exactly the same stuff as previous roll. It won't weld!!!! didn't change any settings ( there are so many!!) its as though I'm using a MIG with no gas on, just big blobs, no adhesion, no weld pool, nuttin! Any ideas anyone because I'm foxed? MOD - I've changed the title to something that actually refers to the content of the thread.