Toothpaste is the perfect mild abrasive! I have been using it with good results for over 10 years- I apply it with my finger.
The reason an abrasive is neccessary is that the scratches create imperfections in the finishing coat of the disk. When the laser hits these imperfections it's beam gets reflected causing the pickup to error out.
Once the imperfections are smoothed out the laser has a clear shot at the data underneath the finishing coat. Not all scratches can be worked out but many can.
The reason an abrasive is neccessary is that the scratches create imperfections in the finishing coat of the disk. When the laser hits these imperfections it's beam gets reflected causing the pickup to error out.
Once the imperfections are smoothed out the laser has a clear shot at the data underneath the finishing coat. Not all scratches can be worked out but many can.