Large-diameter (>1600-m), thin-walled (<5-m) glass capsules suitable for use in the intertial confinement fusion program have been successfully manufactured using the silicon doped glow discharge polymer (SiGDP) conversion process. The SiGDP conversion process not only enhances the capabilities of high-aspect-ratio glass capsule fabrication, it also is instrumental in the manufacture of iron doped glass capsules (up to 1 at. % iron) for mix experiments.