I use an epoxy system specifically designed for ski and snowboard applications by QCM Industrial, a local company. The epoxy is designed to be flexed and resist impact at extremely low temperatures. The epoxy resin and hardener are measured out and weighed to the gram, then mixed thoroughly. The boards are pressed with carefully controlled heating, on the top and bottom of the board, to cure the epoxy properly so it will develop its full properties. I ramp the heat up from room temperature to 175F slowly, then hold the heat steady for a one hour cure under pressure. The laminate is cooled slowly down to about 145F, over the course of 30 min, before being removed from the mold. The laminate is the allowed to rest for two days before first flex to allow the epoxy to continue to cure undisturbed.
Before a new batch of epoxy is used I test a 100g sample to ensure that the product performs as expected. Each batch is labeled, and the test sample is saved so that we can diagnose any potential issues with the final product later. I’ve never had to do that, but I’ll continue to be diligent anyway.