How do I prepare welding joint?

1.Clean
Cleaning both the weld joint area and the filler metal is an important preparation. Remove all oil, grease, dirt, paint, etc. The presence of these contaminants may result in arc instability or contaminated welds.
2.Clamp
Clamping may be required if the work piece cannot be supported during welding.
3.Tack weld
Make short 1/4 in. tack welds along the work pieces to hold them together.

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