Ray, I am using Cadillac Plastic Acrylic Adhesive SC-125. In addition sealing with a silicone sealer because I can't get the acrylic edges smooth enough, cut with a regular saw blade. I don't think it matters if the adhesive is non-toxic because it evaporates and it is being covered with silicone. Ted Linder Kansas City, Mo 64112 tclinder at sprynet_com or 816 361-8778