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Old 03-09-2008, 11:52 AM
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Welding vertically

When welding vertically is it best to start your bead at the top or bottom of the weld?


All I have at the moment is an arc welder and I'm jsut now geting to the point of useing it and learning with it.

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Old 03-09-2008, 12:07 PM
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stick weld is bottom up so the slag does not run down and contaminate your weld also use the smallest wire you can it will be easier to control .Start your puddle whip your wire up the seam then back to the puddle without breaking the arc this will give the puddle a split second to solidified and not run down hill on you .
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Old 03-09-2008, 12:41 PM
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There are very few situations where you would start at the top, AKA-down pass, down hand, vertical down, etc. Whether you use the down pass or not (avoid it when possible) depends a great deal on the thickness of the metal and type/size of rod being used. Some rods will weld vertical up easily while some will not weld up at all, for instance an E7018 will weld vertical up just fine but don't try it with a 7024! Also the size of the rod plays a big part because even though the E7018 is an excellent all position rod in sizes up to 5/32" anything over that becomes very difficult to nearly impossible. There really is no simple answer and this is one of the reasons that teaching yourself to stick weld without "hands on" instruction is so hard to do. What type/size rod are you using? What is the thickness of the metal? Lots of variables to address before making the decision but as I said earlier down pass welding should be avoided when practical.
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Old 03-09-2008, 02:07 PM
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The weld is alot stronger when welded from the bottom to the top.
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Old 03-09-2008, 07:50 PM
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ok thanks guys! That exactly what I needed to know!
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