A very good TIG welding technique for pipe and a few other round shapes is walking the cup.
But its good to be also be able to freehand.
Sometimes there are obstacles that prevent walking the cup. For those occasions being able to prop with a tig finger can help.
Other times, a part has smooth m...
There are several charts in text books and on web sites that depict the penetration profile caused by different grind angles of tungsten electrodes.
I like to see things for myself so I tested 3 very different angles on pieces of 2% lanthanated electrodes ...all 3/32" (2.4mm).
I let the piece co...