However, because the current is not maintained absolutely constant, skilled welders performing complicated welds can vary the arc length to cause minor fluctuations in the current.

He was a skilled welder and a serious student of alchemy and nuclear science.

But a shortage of skilled welders meant that only the original prototype, F100, was built in this fashion.

As the electrode position is also constant relative to the weld, the risk of porosity is also reduced, to the level of a skilled welder.

Once started it continues automatically, without needing enough space for a skilled welder with sight of the weld.

Many treadle pumps are manufactured locally, but they can be challenging to produce consistently without highly skilled welders and production hardware.

Their permits described them as skilled welders.

A highly skilled welder can remove significant warpage using this technique.

Electroslag welding easily lends itself to mechanization, thus reducing the requirement for skilled manual welders.

This rocket-shaped machine can travel along the inside of the pipe, and weld a section together in four minutes instead of the 16 hours that a skilled welder would take.