The so-called Demon Core was a cursed object ... mimicking the release of radiation that doomed Louis Slotin. The outer spheres are then printed in silvery PLA to replicate the beryllium half ...

The fabled Demon Core was a radioactive plutonium sphere ... and (ultimately) inventoried. Slotin's hubris and bravado caused his death, but it didn't mean he deserved that suffering, and it ...