Outside Corner joints on 11ga 6061 aluminum are enjoyable. This This Aluminum cube project is a good way to get some practice on outside corner joints.
Some Structural welders are being required to make welds like this 5F round tube to flat plate using 5/32" 7018. Here are a few tips on machine settings, arc length, and body positioning
Pipe Welding downhill is required for many procedures in the oil and gas industry. It helps to start with plate and gradually move to pipe once you have the basics
This plate is placed on a 45 degree to simulate that 4-5 o'clock area of a 5G pipe where things start to sag. Its not true overhead and not vertical either. But is a great practice plate leading to pipe