Nick,
Just from looking at pictures, it looks like the vertical welds are downhill? Lack of penetration is my first instinct. Downhill is fine for some instances, but structural work should be uphill. Also, MIG welding presents some issues that differ from stick. MIG starts are notorious for being cold and it takes a bit to warm the join area. On structural work, you should always start “inboard” and weld in the direction of the other edge. Then, come back and grind a portion out to give you a solid place to begin and complete the weld in the other direction. Also, MIG will deliver a weld that is pleasing to the eye but without penetration because people have a tendency to turn the machine down and they aren’t conscious of the leading edge of their puddle. I’ve done several repairs for neighbors who have broken equipment farming, due to inferior welding.
Bud
Just from looking at pictures, it looks like the vertical welds are downhill? Lack of penetration is my first instinct. Downhill is fine for some instances, but structural work should be uphill. Also, MIG welding presents some issues that differ from stick. MIG starts are notorious for being cold and it takes a bit to warm the join area. On structural work, you should always start “inboard” and weld in the direction of the other edge. Then, come back and grind a portion out to give you a solid place to begin and complete the weld in the other direction. Also, MIG will deliver a weld that is pleasing to the eye but without penetration because people have a tendency to turn the machine down and they aren’t conscious of the leading edge of their puddle. I’ve done several repairs for neighbors who have broken equipment farming, due to inferior welding.
Bud