Hi Guys, I have been practicing welding plate uphill with 7018 electrodes recently and hope to test for it soon. I have been using 2.5mm rods for the root and 3.2s for hot pass fill and cap, would this be the correct procedure? The plates are 12mm thick and I leave a 2.5mm gap between them and it is...

Leatherwelder wrote:when should you use electrode negative? I've been told it's when putting in a pipe root. What difference does it make? I'm new to welding so I'd appreciate all the info I can get.

Thanks Guys for the info, much appreciated. Looking forward to chatting with all on the forum. :

when should you use electrode negative? I've been told it's when putting in a pipe root. What difference does it make? I'm new to welding so I'd appreciate all the info I can get.