4 ms·

https://en.wikipedia.org/wiki/Blackboard https://en.wikipedia.org/wiki/Blackboard

• dandrew5 2y ago
  Keeping it classic, nice. How do you manage the dust?
  • farseer 2y ago
    Perhaps with multiple vacuums attached on the bezels.
  • snackbroken 2y ago
    1) Try a few different "dustless" chalk brands. Pick the one that's the least dusty. It probably won't write as nicely. 2) Erase with a damp cloth, not a dry felt eraser. 3) Use a blackboard with relatively low surface roughness. It won't write as nicely.
• hartator 2y ago
  What would be the fancy modern buyable version of this?
  • deleted 2y ago
    [deleted]