I don't always use pulse setting for aluminum but when there is a gap on an outside corner joint, using one size bigger filler metal along with pulse settings can make the job easier and quicker
WELD PROCESS = TIG, GTAW, GAS TUNGSTEN ARC WELDING
METAL TYPE = ALUMINUM 6061
THICKNESS = 1/8"
WELD TYPE = FILLET WELD
JOINT TYPE = CORNER JOINT WITH GAP
POSITION = 2F HORIZONTAL
AMPERAGE = 180 WITH PULSE SETTINGS AND CONTROLLED WITH FOOT PEDAL
TUNGSTEN = 2% LANTHANATED, 3/32"
FILLER WIRE = 1/8” 4943
POLARITY = AC
GAS FLOW = 20 CFH argon
CUP SIZE = 8
ADDITIONAL SETTINGS = AC BALANCE 33% CLEANING, AC FREQ 100HZPULSE SETTINGS= 1.5 PPS, 33% BACKGROUND, 33% PEAK PULSE
PRE FLOW = 1 SEC
POST FLOW = 10 SEC
TIPS: KEEP A FAIRLY TIGHT ARC AND KEEP TORCH ANGLE TO A MINIMUM
Aim for an arc length that is equal or less than the diameter of your tungsten electrode.Torch angle can be forgiving provided your arc length is tight.