A few issues with welding: One of the benefits of profile extrusion is the ability to work and rework it by just adding/removing/cutting pieces. Welding may in

A few issues with welding: One of the benefits of profile extrusion is the ability to work and rework it by just adding/removing/cutting pieces. Welding may interfere with this. Welding aluminum is also tough (though obviously not impossible). The heat also can lead to warping of the pieces, which probably isn't a big deal in van life, I was trying to use it as part of making good flat planes for a workbench.