Hi, I've just bought a Clarke 151TE, and started practicing. it comes with 0.6 wire, and I've bought a roll of 0.8 SIP wire, question is, when do you change from one size to the other? looking at the settings recommended, there is no real difference in the recommended current / feed settings, so i'm unsure when to change wire size? i assume thicker wire for thicker material / bigger welds? I've started on my first project ( welding trolley ) so will post pictures in due course.