"We needed weapons, and we needed them fast," 3D says, sitting beneath the stalactites in a dimly lit cave, somewhere deep in the jungle in eastern Myanmar. The space reverberates with the hum of 3D printers--the devices that gave 3D his nom de guerre. He spoke on condition that WIRED would not reveal his real name or show his face. "My parents would kill me if they would know what I'm up to," he says. Not only does 3D face the risk of arrest, torture, or execution for his part in the revolution, the military would not hesitate to arrest his parents if they were to discover 3D's identity.