How do I install fasteners in epoxy projects?

We recommend using threaded inserts for attaching fasteners into epoxy. Threaded inserts have a recommended drill size, but for drilling into epoxy, we recommend using a drill that is 1/16th inch larger. The increased hole diameter will prevent damage to the epoxy. For drilling into wood, follow the manufacturer’s recommendations. If inserts cannot be used, you can drill and tap the epoxy to accommodate machine screws for light loading. Epoxy is comparable to softwood when it comes to screw retention.