Quote Originally Posted by wruehl View Post
... I saw Aluminum mentioned as being a poor conductor, not sure what they meant, it is a really good conductor. Perhaps too good for a welding table in the sense that if it where to contact the welded item near the HAZ all your heat is going into the table. ...
I was referring to the electrical conductivity, not the heat transfer. Having the ground clamp on the table and the work piece sitting on top, I was thinking that the aluminum would not be a good choice for the electrical path.