If the resulting weld looks irregular or messy, or shows signs of
porosity or slag contamination, you have almost certainly failed
to achieve the correct combination. Do not worry as practice
will soon cure this, and the following tips on welding pitfalls should
help to improve your technique quite quickly.
WARNING: Never look at welding arc, it can seriously
damage your eyes. Always use the face shield provided
or any proper welding mask.
HEALTH WARNING: When welding always make sure
there is adequate ventilation in the working area as the
welding process gives off toxic fumes.
7.0 WELDING PITFALLS
The arc welding technique is an acquired skill and will almost
certainly require considerable practice before perfect results are
obtained. The diagrams below should help to explain pitfalls in
your technique and how to overcome them.
1 Arc distance too short - this causes irregular masses of
weld to be deposited with slag contamination on the uneven
surface.
2 Arc distance too long - this causes poor penetration
resulting in a weak weld with excessive spatter and porosity.
Surface of weld is rough and the arc makes a hissing sound.
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