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Water chalk does not write well when used on a chalkboard and has to always be shaken and have pressure on the lead in order for the ink to come out. When using a chalk, the part where it is gripped is facing the top so that the ink inside gathers away from where it should come out which makes writing difficult. A syringe will be placed inside the water chalk so that even when the chalk is angled upside down, the plunger of the syringe will force the ink away from the bottom. To restore ink the plunger should first be pulled back and held in place, then turn and open the chalk at midpoint, which is unlike traditional water chalk.
CHEONGJ, South Korea