Another great tip from Weldcraft®
Avoid porosity by maintaining tight TIG torch fittings and cable connections, using higher gas flow rates, shielding the weld area from wind and cleaning your base metal.
One of the best improvements you can make to the performance of your torch is to replace the standard collet body with a gas lens collet body. A gas lens version is an enhanced collet body constructed of a series of concentric, layered screens of varying mesh engineered to improve shield gas coverage. The screens generate a laminar gas flow, optimizing the weld zone coverage and eliminating turbulence, which can draw in contaminants from the surrounding air. It’s especially beneficial with stainless steel and materials such as aluminum and titanium, which are particularly sensitive to oxygen contamination.
A gas lens also allows the tungsten electrode to extend beyond the end of the TIG/GTAW nozzle by as much as 1 in. for improved visibility, reducing tungsten inclusions and weld defects.
More tips available at www.JoeWelder.com