Workshop Technology
In shielded arc welding

Large electrode is used
Welding rod coated with fluxing material is used
Welding rod coated with slag is used
None of the listed here

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Workshop Technology
Swab is used for

Cleaning the moulding sand
Moistening the sand around the edge before removing pattern
Reinforcement of sand in the top part of the moulding box
Smoothing and cleaning out depressions in the mould

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