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* Machine strikes an arc between the work and a consumable wire electrode, melting a pool of metal
** Welding isn't like soldering, welding melts the pieces of metal and allows them to flow together and mix with the filler material. When it re-solidifies it's one continuous piece of metal
* Wire dips in and out, adding metal to the pool
* Gas shields the hot metal from the air
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** The voltage is low, but you still don't want to touch it
** Mind what you point the torch at
** Power on this welder cuts off as soon as the trigger is released, which is not the case for all welders.
** NO RINGS, NO WATCHES!!
** Users with implanted medical devices should seek doctor's approval before welding, it's not usually a problem, but please do check
** The welder plugs into
*** Use only suitably rated industrial extension leads, they're in the desk drawer B1B
*** Extension leads are a trip hazard, warn people
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