morning. the silver bullet is designed to vent out the button. it's vent is under that, but Chad is considering adding an extra hole to the bottom. The wood mods probably have plenty of natural venting, as there have been no reports yet of any explosions. If you are not stacking
batteries, there is less chance this will happen. Most wood mods have a spring that are set to collapse if an atty shorts. This is a protection in itself.