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THE SAFEST CUTTER KNIFE DESIGN
People usually use a ruler when they cut paper. They put pressure on the ruler
and then make a slice down the side of it.
However, the design below could do it more easily. The design I suggest will
incorporate a knife with a lever mechanism attached to the ruler, allowing the
user to set their desired cutting area according to their own preference.
Thus, making the operation is more exactly.
Gyeong San, South Korea