Tip for 7018 vertical up V groove
I like to push the rod through the weld joint keeping a 10-15 degree angle. just make sure to watch the tip. If it starts to toe-nail increase the angle. Also when using the weaving technique for the filler passes and cover pass make sure to slightly pause when you get to the sides of the weave this is were the joint is the coolest and weldors tend to undercut at this point.