[Talonmotorsport]

It depends what material has been laser cut as to what the weld does. Hot roll (HRC) also known as 'black' box section and sheet comes with a layer of black scale,this should be removed before welding to give a better arc. Cold formed/rolled steel sheet tends to be either a light grey colour or bright and is much nicer to work with. It's cleaner and welding arcs seem to prefer it. As for heavier laser cut parts like 5mm+ I tend to clean the edges up back to clean steel in case the cutting has tempered the edge of the material.