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Old 2020-02-13, 06:40 AM   #31
Join Date: Jun 2014
Location: Murwillumbah, NSW, Australia
Age: 60
Posts: 1,145
Originally Posted by Gockie View Post
So playing it back, can I confirm you are saying I should also be turning the rod 90 degrees the whole time while I'm going down along the metal constantly?
Maintain the same angle with the rod and stay in line with the direction you are moving. Just move the tip of the rod in a tiny bit back and forth sideways working along the leading edge of the puddle.

When you are just laying down a bead and not really joining anything, the area impinged by the arc might be as wide as the puddle so the sideways movement is virtually not there.

It becomes more obvious with a larger puddle where you need to move the arc back and forth sideways so you are melting a wider run. The little semicircles follow the edge of the puddle. You have probably seen them in a finished weld where the puddle advanced with each semicircle.

Imagine joining two big fat pieces of metal. To get good penetration you grind a vee most of the way to the other side along the join. The two pieces only touch for the depth the arc can penetrate. After melting this you move the arc to one side and melt that into the puddle then to the other and melt that. All the while the rod is melting and filling up the vee.

Later in you course they will explain this which is known as weaving.
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