Background. I am older than dirt. Stick welded a zillion years. Moved on to a MM251 Mig. It made me want to throw rocks at my old stick machine. Couple of months ago my wife gave me a new Miller Syncrowave 200 Tig Runner (long tale of chicanery and treachery there). I thought that I would pick Tig up in no time. Used to do a fair amount of OA welding in my youth. The Tig has whipped me! Whipped! It sort of reminds me of running down the road on my '59 Panhead while drinking a cup of coffee, smoking a cigarette, shifting gears and trying to adjust the carb. I may be too old to coordinate both hands and one foot to weld.
The 200 came with a Weldcraft WP17 torch and a 3/32" Ceriated tungsten. I tried butt welding 16 ga. mild steel with no filler and it looked like a mud dauber had been working on a nest. 3/32" tungsten is too big, but I wanted to give her a try. Mostly what I accomplished was to stick the tungsten in the puddle too many times to count. Got fairly good at sharpening tungsten. Tried using a 1/16" filler rod on the 16 ga. butt weld and mostly I managed to stick the filler rod on the tungsten. Sigh.
I got some proper sized tungsten and filler rod and have moved out of the mud dauber phase, somewhat. I have taken a few photos and would appreciate advice and critique. The pictures labeled Angle, Angle 2, Angle Crush, and Angle Crush 2 are of two pieces of 1/8" angle that were slightly beveled. Put together to form two corner welds. I sawed a 1" piece off the left end to check penetration and crushed it in my press. Penetration looked about 99% with no burn through on the inside.
Rectangle 1, 2, and 3 are photos of four pieces of 1/8" flat bar joined into a rectangle to give four corner welds (no bevel). Start of welds is on right, end is on left. Rectangle 1 the bead was run with no filler rod - just tried to run a fusion bead. The starts and stops leave something to be desired. Weld bead is not too uniform which I think is probably from not moving, pausing, and dabbing consistently. Also I am having trouble getting the bead to flow out to the very edge as you can see. I tried to move the torch in a straight line, pause, dab, move, pause, dab. Perhaps I should be tryng to circle the torch?
Okay, with the exception of the one bead run with no filler, all the rest were made with the 200 at 132 max amps (foot control and in trying to back off from that I found I pretty much had to give it full peddle for the puddle to look right). 1/16" Ceriated tungsten sharpened. 20 psi Argon. 1/16" ER70S-2 filler rod (book said to use 3/32" filler). Your first suggestion will probably be to get someone to show me how to weld. That is out. I live at the end of the world, and if I learn to do this it will be on my own. Do any of you move the torch in a small circle, or is it more correctly in a straight line while pushing the filler rod into and out of the puddle? Thanks.