Has anyone here ever laminated epoxy to aluminium? I'm redoing the mast step area on my J24, the mast sits on an aluminium beam which is laminated to the bottom the hull. The old poly fiberglass around the beam was tired and I'm redoing the area with epoxy. The pro's seem to be using Plexus but its fierce pricey. West System do a #860 etch kit, and I'm using west epoxy so that might seem like the best option, but I was wondering would sikaflex 292 (which I have) be better to bond to the aluminium first? Then laminate the epoxy over that once cured? I'm thinking to use the 205 cleaner and 206 primer for better adhesion of the sika to the alu. The alu beam has a small bit of pitting so using the sikaflex first sounds better to fair the beam first.