Page 1 of 1

Basic Question About Butt Welds

Posted: Sat Nov 14, 2015 8:26 pm
by RedyTedy
When TIG welding aluminum, or just welding in general, should there be a slight gap between the two pieces?

I have heard that you want a very slight gap for the metal to flow into, but I read somewhere else that the pieces should be flush. What is the correct answer?

Re: Basic Question About Butt Welds

Posted: Sat Nov 14, 2015 11:38 pm
by MosquitoMoto
Welcome RT.

Gap, no, but for good penetration (depending on factors including thickness of the material being welded) a bevel can help penetration.


Kym

Re: Basic Question About Butt Welds

Posted: Sun Nov 15, 2015 12:07 am
by Oscar
There is no ONE correct answer. Just different processes and different acceptable parameters/specifications for the weld procedures. If you are doing hobby welding, you NEED to practice and cut up your practice pieces and etch them to see if YOU get acceptable fusion for your tastes. Naval Jelly rust remover can etch steel and EZ-Off oven cleaner can etch aluminum (if you smooth out the cut lines from the portions you slice up). Try it. It's a great learning experience.

Re: Basic Question About Butt Welds

Posted: Sun Nov 15, 2015 12:10 am
by Poland308
Check out the recent vids Jamie posted under distortion. Both will answer a lot of questions.

Re: Basic Question About Butt Welds

Posted: Sun Nov 15, 2015 8:23 pm
by Otto Nobedder
Poland308 wrote:Check out the recent vids Jamie posted under distortion. Both will answer a lot of questions.
Do you mean, "Jody?"

You said "Jamie," and I have no idea who that is.

Steve S

Re: Basic Question About Butt Welds

Posted: Sun Nov 15, 2015 9:30 pm
by Braehill
I tried to PM him to clear the whole name thing up, as he's referred to him as Jamie on other occasions but he still didn't get it. So I'll try the method that works best with my children, I'll raise my voice, which by the way doesn't happen often.

HIS F-ING NAME IS JODY, GOT IT.

Len

Re: Basic Question About Butt Welds

Posted: Sun Nov 15, 2015 10:35 pm
by Poland308
Auto correct I got a friend Jamie and it auto corrected when I went to type Jody. I didn't catch it. My bad. Sorry.

Re: Basic Question About Butt Welds

Posted: Sun Nov 15, 2015 10:36 pm
by marvin_narciso
:lol: hahahahah. Sorry, I couldn't help it.

Re: Basic Question About Butt Welds

Posted: Sun Nov 15, 2015 11:04 pm
by rake
Most times there's nothing wrong with a small, controlled gap in your fitup. Especially when you are looking for a full penetration.