Take some pics or a video and lets see it in action.
Cheers. Once ive set my garage up safely ill practice more. They were quick test in the garden as was eager to have ago.Looks good for someone who has been away from migging for 10 years !
The joint looks good.
The weld on the flat steel looks cold though.
Probably would help cleaning the steel a bit better first.
Its 25x25x2.5 box.Cleaning the steel reduces impurities from contaminating the weld.
What are you welding there? 40x40x3 box section? And what settings??
The joint welded nice as would have been a small gap to drop into.
On the flat try adding another 10-15amps to let it burn in and lay a little flatter.
Was only a quick test as wasnt safe to test in garage at the moment.If it's windy, not welding in the garden!