How to fix scratches in a CRT face?

[eberts]

You can use one of those round sanding grinding pads that go in a hand power drill. Start with 240 grit and work up to 330. Keep the sanding pad moving, don't stay in one spot. Take your time, glass will heat up. When completed, let it cool.
Now use a polishing pad on the drill. Mix cerium oxide powder with some water, mix to a lumpy paste. Pour some on tube face and start polishing. Keep a spray bottle of water around and spray polishing head with it when the polishing compound begins to dry out. Take your time, glass will warm up a little.
It's menial work, should take about 2 hours for small scratches.