Welding Question - Voids after grinding smooth

[Mike_C]

I'm welding up a new base for my CNC mill, and some of the welds need to be ground smooth. Using 2" 11 gauge tubing with a millermatic 211. All edges are beveled as well.

Here is a picture before welding

And here is a picture showing some of the welds ground smooth, you can see the voids I am getting. I've always gone back over welds like these to fill in the voids, grind, fill, grind...

This will be the final result if all goes to plan

 

[Know Wosad]

Drag or push?
Circle motion or back and forth ?

Here's how I mig weld...since RayGun was loitering in DC.No I wasn't South Carolina ;-)
Ohio ;-)

 

[Know Wosad]

BTW. PUSH !(whenever possible) Sorry Jody

 

[Superbec]

it is called "undercut" it's a welding defect , it's caused mainly by p.w.d.k.w.t.h.t.a.d.

for your current application is not that big of a deal , use some bondo

 

[Mike_C]

pulling, circles. I'll try pushing, thanks.

I always forget the proper directions. By pulling, am I blowing to much gas into the weld? Or is it a heat thing? I'll watch the video after work.

 

[Superbec]

Here's how I mig weld...

Is that you?

 

[Zeke]

it is called "undercut" it's a welding defect , it's caused mainly by p.w.d.k.w.t.h.t.a.d.

for your current application is not that big of a deal , use some bondo

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[Ign]

aka wagon tracks?

 

[Leaflessshadetree]

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Personwhodosntnowhatheyrduing

 

[Mike_C]

Drag or push?
Circle motion or back and forth ?

Here's how I mig weld...since RayGun was loitering in DC.No I wasn't South Carolina ;-)
Ohio ;-)

Thanks Jody, I've come across your channel a few times over the years. I ended up watching your mig basics playlist to give my self a refresher. Also watched a few other videos, keep up the good work