I have a Defiance winch ... The instructions work just fine.
As to the welder ...
Gas metal arc welding (GMAW), sometimes referred to by its subtypes
metal inert gas (MIG) welding or
metal active gas (MAG) welding, is a semi-automatic or automatic arc
welding process in which a continuous and consumable
wire electrode and a
shielding gas are fed through a welding gun. A constant
voltage,
direct current power source is most commonly used with GMAW, but constant
current systems, as well as
alternating current, can be used. There are four primary methods of metal transfer in GMAW, called globular, short-circuiting, spray, and pulsed-spray, each of which has distinct properties and corresponding advantages and limitations.
Originally developed for welding
aluminum and other non-ferrous materials in the 1940s, GMAW was soon applied to
steels because it allowed for lower welding time compared to other welding processes. The cost of inert gas limited its use in steels until several years later, when the use of semi-inert gases such as
carbon dioxide became common. Further developments during the 1950s and 1960s gave the process more versatility and as a result, it became a highly used industrial process. Today, GMAW is commonly used in industries such as the
automobile industry, where it is preferred for its versatility and speed.
This is as opposed to TIG:
Gas tungsten arc welding (
GTAW), also known as
tungsten inert gas (TIG) welding, is an
arc welding process that uses a nonconsumable
tungsten electrode to produce the
weld. The weld area is protected from atmospheric contamination by a
shielding gas (usually an
inert gas such as
argon), and a
filler metal is normally used, though some welds, known as autogenous welds, do not require it. A
constant-current welding power supply produces energy which is conducted across the arc through a column of highly ionized gas and metal vapors known as a
plasma.
GTAW is most commonly used to weld thin sections of
stainless steel and light metals such as
aluminum,
magnesium, and
copper alloys. The process grants the operator greater control over the weld than competing procedures such as
shielded metal arc welding and
gas metal arc welding, allowing for stronger, higher quality welds. However, GTAW is comparatively more complex and difficult to master, and furthermore, it is significantly slower than most other welding techniques. Furthermore,
manual gas tungsten arc welding is often considered the most difficult of all the welding processes commonly used in industry. Because the welder must maintain a short arc length, great care and skill are required to prevent contact between the electrode and the workpiece. Unlike most other welding processes, GTAW normally requires two hands, since most applications require that the welder manually feed a filler metal into the weld area with one hand while manipulating the welding torch in the other. However, some welds combining thin materials (known as autogenous or fusion welds) can be accomplished without filler metal; most notably edge, corner and butt joints.
I do alot of simple work like frames and simple panel replacement. MIG is easy to use by controlling the following:
correct size wire
correct heat (current)
correct wire feed speed
inert gas
and you will have a beautiful weld
While TIG welds are a thing of art it is MUCH harder fo the following:
You have to use 2 hands to do the welding
You have to modulate the frequency of the welder (usuallly a foot pedal)
check out Wikipedia under TIG and MIG ... that is where some of the prervious came from.