Glued 1/8" ID washers to rivet holes in E-612 molded fiberglass tips with Krazy Glue (Cyanoacrylate) to add strenght to hole when using attaching rivets.
After Cyanoacrylate dried, the washers were covered with epoxy resin or Shoe Goo to permanently bond them to the fiberglass.
Used clecos to temporaly hold washers in rivet holes