If you can catch or feel scratches with your finger nail, you may use the sanding discs first to make the deep scratch into the light scratch. Work the polishing bob over the scratch, applying more polishing solution as needed.
How to Easily Remove Scratches from Your Watch Crystal
How to Remove Scratches From Any Watch Crystal - Maxim
WATCH GLASS POLISHING Kit, Glass Scratch Removal, Acrylic, Sapphire Crystal $12.50 - PicClick
How to Easily Remove Scratches from Your Watch Crystal
Removing Scratch From Sapphire Watch Crystal
WATCH GLASS POLISHING Kit, Glass Scratch Removal, Acrylic, Sapphire Crystal $12.50 - PicClick
How to Guide: Watch Crystal Repair
How to Guide: Watch Crystal Repair
How to Remove Scratches From Any Watch Crystal - Maxim
Watch Glass Scratch Remover, Polishing Kit: Acrylic, Glass, Sapphire Crystal