TIG Tips - Aluminum Lap Joints

This video on TIG welding Aluminum Lap joints shows up close arc shots along with a technique that might help you avoid dipping your tungsten

My settings and details for these aluminum lap joints are:

120-135 amps 

AC balance 67%

AC frequency 100hz

Argon set to 20cfh for the furick #8 pro cup and 15 for ally #5 cup

3/32" (2.4mm) 2% lanthanated electrode

3/32" (2.4mm) 4043 filler metal (1/16" (1.6mm) filler metal for tack welds)