Our experience with using CA to bond aluminum to anything would be NO. Aluminum and most plastics would have too smooth a surface for any glue to adhere, even if the surface was roughed up a bit. So, we always made miter sleds so the bars were at a thickness allowing the bars to ride on the bottom of the grooves and the bottom of the sled was not in contact with the top of the saw table by just a whisker. That way, the only contact would be the bottom of the bars.