Searching for some good videos to help you with MIG Welding?
This page has the right videos to jump start your learning without any fluff.
one of the best ways to get better at mig welding is to run lots and lots of beads.
An easy way to do that is with a Tee joint.
The simple tee joint lets you run a straight bead by following the joint seam.
And then you can get tons of welding practice by stacking beads...each bead overlapping halfway over the previous bead.
just watch the video above to get jump started on this skill building exercise.
Short circuit mig welding a vertical uphill tee requires some gun manipulation in order to achieve penetration and at the same time, avoid excessive convexity.
In other words, unless you do something to help the bead lay down flat, it will hump up.
this is partly due to gravity but is also just a characteristic of short circuit mig welding.
I either use an upside down V technique or a series of triangles to make the metal spread out and lay down flatter.
Just welding uphill without any torch movement usually results in crowned bead with way too much convexity.
Watch the video above to better understand this welding technique
Mig Welding overhead should be done using almost the same settings used for flat or horizontal positions.
A common misconception is to set the machine colder so that the puddle can be controlled more.
Actually, a hot setting often works better on overhead than a cold setting.
Watch the video to learn wire speed and voltage settings and to see the importance of CTWD. ( contact tip to work distance).
A common short circuit mig weld test is a 3/8" thick plate test with 30-37.5 degree bevels where the root pass is welded downhill and the fill and cap are done uphill.
The number of weld passes are usually up to the individual welder.
In this video, I used a total of 3 passes.
root pass downhill, fill pass uphill, and a cover pass.
Watch the video and see the techniques used and then practice.
There is an awful lot of discussion on whether a push angle works better than a pull angle for short circuit mig.
In the video above I tested some different techniques for penetration to see the difference in pushing or pulling.
For fabricating things out of thin wall tubing, mig welding can be the very best method because little or no cleaning is needed and because welding downhill works great for thin wall tubing.
All the same best practices apply .