3 Electrode moved over workpiece too slowly - this causes
a very wide and heavy deposit which overlaps at the sides. It is
wasteful in terms of both time and electrodes used.
4 Electrode moved over the workpiece too quickly - this
causes poor penetration with a "stringy" and incomplete weld
deposit. Slag is very difficult to remove.
5 Amperage too low - this causes poor penetration and
causes the electrode to stick to the workpiece easily. Also results
in a very irregular and high weld deposit with difficult slag removal.
6 Amperage too high - this causes excessive penetration
with spatter and a deep and pointed crater. It may even cause
holes to be burnt in the workpiece. Burns electrodes very quickly.
/f_" \
13
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