Glass polishing
Mechanical polishing.
Chemical polishing: Heated bath of concentrated sulfuric acid (H₂SO₄) and hydrofluoric acid (HF).
Flame polishing.
Ion beam polishing.
Magneto-rheological finishing (MRF).
Elastic emission machining (EEM).
Ultrasonic polishing. Ultrasonic + cerium oxide. 20% to several times faster.
Laser polishing.