stack of dimes (mig welds)

[BajaWelder]

Looking to get better, obviously practice makes perfect but I cannot get that [i]stack of dimes"[i] look on tubing or flat stock.
Mostly practicing on flat stock 10ga or .120 wall tubing (fishmouthed) to fit another piece of tuning(like a roll cage)

Using the Miller 175 with 75/25%.

what am Im I doing wrong?

Too me, its actually easier to get better looking welds TIG vs MIG.
TIG




thanks!

[Scott V]

what am Im I doing wrong.

Worrying about it.

[jamlit]

Not sure what you mean by the fish mouth look. Maybe you could post a pic. As to the stack of dimes look. sometime that is the affect of a pulse weld. also it is the affects of a small side to side motion while welding. If your heat and wire speed are set right, move your bead side to side just a little and should see the look you are looking for and get a good weld.

[KB Fabrications]

what am Im I doing wrong.

Worrying about it.

lol. hehehe

[tsalagi]

if you mean fish mouth by that they are pointed, then your travel speed is too fast.

[Sundown]

Somehow I don't think he is refering to the weld bead being "fishmouthed" but the tubing end being "fishmouthed". If you are using a MM175 don't expect to be able to make the weld look like the Tig beads, it might be possible, but it certinly won't be easy.

[paulrbrown]

The picture posted looks alot like Aluminum also. Sometimes the 'Stack of Dimes' look is a good selling point to an uneducated eye, meaning if it looks good it is good, but those dimes can be stress risers leading to a shorter life. A good smooth bead with MIG is probably stronger, just not as ***y. Hope this helps, Paul

[makeithot]

That stack of dimes look your after is created by pulsed arc mig and is created by whipping simular to burning E6010 electrode takes some practice but not much. On the other hand though those welds look pretty good to me. Don't worry about it.

[Bert]

How the heck do you do that in the first place without a pulse MIG? Are you pulsing it with the trigger?
please answer by e-mail, I may not be able to find this thread again.thanks
Hawaiianmetalworks@hotmail.com
New to welding
bert

[HMW]

They look pretty good to me, as someone else said, smooth is really OK. It does look like aluminum in the picture