I have some Corian stock in 1/2" sheets. I would like to "lay up" 3 sheets to have 1.5" stock that I can then CNC machine. It seems the "official" bonding material to use for Corian is only available to certified dealers, and a web search seems to indicate that getting a good strong bond is a difficult thing to do.

Does any one on here have a suggestion based on experience they have had for a good adhesive? It will need to take side load during machining (I may pin the sheets together to take that load). I also would like the adhesive to have nearly the same hardness of the Corian, or be very thin - it should not be obvious that the finished piece is made from multiple pieces. I will be using the machined part as a mold to make castings from, so I don't want the seam of the Corian to telegraph in to the cast part.

Any specific recommendations for brand and "flavor" of epoxy? Would simple caulk work? Other ideas?