So I posted on the Hobart board... so now because I know some of you don't frequent there (and I'm sure some do...) I will repost it here...
Please do chime in.
Here's a copy and paste:
"Had to weld some full-open corner joints using 1/4 steel, running my 200 DX on 110. I decided on multiple passes and a final weld to cover all of it. I think it's called a cap weld? Also in the pics is my Tig Torch holder I made out of Aluminum when I was still in school.
Though I took TIG in school I hardly use it at work (I only took about 24 days of Tig welding at school, it was a short summer course, I have no previous experience at all), at work we mainly use MIG and now at my new job I only use MIG on Aluminum. Not sure if some of you remember I first landed a job working with sheet metal of all kinds. The place I worked at sucked in every way (management etc), though I did learn some and learned plenty of lessons while there.
Now I work at a place that builds Aluminum boats, so everything I do is spray! It's fun, I like it, great company to work for, building boats is fun and spraying Aluminum is even better! I like it! Here is where I work. http://www.safeboats.com
Anyhow, back to the pictures, I don't have much time on the TIG, but I try. I did a single pass first (root pass?) then followed with two passes side by side and then one top pass.
Oh quick question, though I got some penetration on the back side (nothing burned, it kind of looks like a mini flat mig weld about a little smaller than 1/8 inch wide) should I throw a single pass fillet weld on the back side of the open corner joint? These are to be brackets for a cable railing. The top will serve as a base which will hold 1 1/2 x 1 1/2 inch square tubing.
Another question, when welding on the square tubing should I weld all sides or just two sides? I was thinking all sides for strength and uniformity? Probably more for visual uniformity...
Any constructive comments are welcome!