Chalks box

This holder can store up to 10 pieces of chalk, each measuring 80x10 mm, for convenient transportation.

The top sliding mechanism might feel tight initially. To improve the movement, gently slide it back and forth 5–10 times to clean the sliding guide. For better results, you can lightly sand the long side using sandpaper. However, avoid creating a perfectly smooth surface, as some abrasion is necessary to prevent the door from sliding open unintentionally.

Check this chalk holder too https://makerworld.com/en/models/1072548