Pulse or tak tak welding. Link to MBN

[Nutz4sand]

http://www.minibuggy.net/forum/projects-progress/14354-fab-school-i-want-build-buggy-3.html

Do you agree with Gregrachelle or think hes wrong?

His talking about using tak tak welding as a pulse for a good weld. 

[SPEC]

Typical for over there...A 3 second burst?
1-1=thousand
2-1-thousand
3-1 thousand
BBBBBBWWWWWAAAAAAAAAAHAHAHAHAHAHAHA
Any of the places I worked at if you did shit like that you'd be out the fooken door, But then again...peoples lives were at stake...not bullshit bragging rights
Set the fooken machine right then weld the shit up
There are times when pulsing the trigger are necessary, thin material, bad fit
Thick material and a big gap...But best off to fit the weldment right then weld like a big boy
They talk like they are 1st year welding course in hi-school flunky's who haven't discovered there are different sizes of wire and different dash numbers to those different sizes of wire...and those little knobs on the front of the machine...turning them makes it act differently

[Boostinjdm]

"If the metal turns red, you just ruined it."  WTF steel always turns red on its way to and from the liquid state where the welding gets done.  You just don't see it. 

[SPEC]

Holy fook.... they ruined my steel while making it

[Yummi]

likely the guy is going off his experience only - sounds as if he works at a body shop with the majority of his metal being thin? 

[Carlriddle]

And the thing is he was taught this in fab school.  Sheet metal work, yes to keep from distorting, but structural, everything I've heard is no.  I seem to recall some guys taking a big  for that. 

[fabr]

The guy went to a "fab school" that specializes in teaching techniques that even idiots can master. That's their PURPOSE and OBJECTIVE.    That doesn't mean it's the best way. No one really thinks that they will teach the best or most difficult to master techniques do they?  In other words ,they are teaching to the lowest common denominator of skills. Ever watch a true master weld two aluminum pop cans together? It sure as hell isn't pulsed.

[Snoopy]

+1

[Whiplash]

Pulse welding has its place, (usually not stressed members) it looks real nice, but the main challenge is getting the penetration you need, typically you have to run the welder on a much higher setting to achieve good penetration and you have to burn it in as long as you can without building a lump. One of the biggest mistakes I see people make when MIG welding is trying to make it look tight and small like TIG. MIG is a large weld if done correcdtly, PERIOD. Some of his welds look OK, but I would be willing to bet most would fail before the tube and you know what that means........a pipe to the head in a roll over!! The best way I have found to get the same look is constant welding and you move forward in 1/8"ish increments and hold and burn in for a second then move on, looks BEAUTIFUL if done right, you just need to practice! The whole swirl thing really doesn't work..

[WelderPat]

MBN = Mind Boggeling Numbnuts
 If you are going to weld your frame like that paint it black.
Cause your going to die in that Mofo.

[SPEC]

The guy went to a "fab school" that specializes in teaching techniques that even idiots can master. That's their PURPOSE and OBJECTIVE.    That doesn't mean it's the best way. No one really thinks that they will teach the best or most difficult to master techniques do they?  In other words ,they are teaching to the lowest common denominator of skills. Ever watch a true master weld two aluminum pop cans together? It sure as hell isn't pulsed.

Nope it's hi freq and no filler rod, if mig it's a hissing roll fest, since the top can supplys the filler to the bottom can thick pushed towards the thin
MMMMMM how'd I know that

[Engineer]

I like to swirl sometimes to make sure plenty of heat is getting in both parts.  Nothing worse than a nice looking bead that doesn't look like it flowed into one of the parts.  Worst in tight spots where you can't get the proper nozzle angle.

[fabr]

Nope it's hi freq and no filler rod, if mig it's a hissing roll fest, since the top can supplys the filler to the bottom can thick pushed towards the thin
MMMMMM how'd I know that

Might be how you would do it but I've seen a man do it with "filler rod" made from cut strips of the cans and ran the weld at 5 amps on a Miller Sq wave machine set up with lowest percent of input to workpiece. .

[fabr]

MBN = Mind Boggeling Numbnuts
 

[WelderPat]

Most Build Nothing
Might Break Now
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Must Beleive Nonsense
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