7 ms·

This is a testament to how well Reed-Solomon encoding/decoding [1] can detect and correct errors! I remember even heavily scratched cd's would work if you clean

• Sharlin 4y ago
  You can indeed polish all sorts of things (aluminum, silverware, car headlights…) with toothpaste. It's an abrasive.
  • germinalphrase 4y ago
    For what it’s worth - Sensodyne uses a finer grit abrasive than many other brands. Might be a better choice if trying to repair cd scratches.
    • acuozzo 4y ago
      The US Sensodyne (sans Novamin) or the regular Sensodyne that every one else gets?
      • germinalphrase 4y ago
        I am in the USA. Wasn’t aware there are different types under that name.
        • monetus 4y ago
          Novamin turns into hydroxyapatite, like in Japanese toothpastes. Fluoride and nanohydroxyapatite work better together than either alone, for carries at least. The approval process is too expensive to get through here, even though nanohydroxyapatite is used regularly in many countries.
• Lammy 4y ago
  > I remember even heavily scratched cd's would work if you cleaned them with toothpaste of all things (?) I've had even better results with this three-step stuff that's actually meant for plastics, with most scratches not needing more than step 2: https://novuspolish.com/ https://novuspolish.com/ That works great for bottom-side scratches, but sadly it's not usually possible to repair any damage done to the label-side of a Compact Disc due to proximity between the label and the reflective data layer underneath. It's really common for well-intentioned people to remove discs from a drive and (in absence of the case) set them upside-down to "protect" them not realizing it's the worst possible thing they could do. All-over-print labels add an extra margin of protection over discs that leave the label's negative space as bare disc silver: https://cdn.hswstatic.com/gif/cd-crosssection.gif https://cdn.hswstatic.com/gif/cd-crosssection.gif