I am new to ham radio and am trying to learn about antenna building. I
have the capability to weld at home very thin material. Was wondering
if EMT conduit would be good for making an antenna? It seems light
weight and resists corrosion and is weldable.

I need somethign that will last. I will be putting it on top of my tv
tower and I am afraid of heights. I only want to do this once.