The unique machine that cuts round cakes into equal pieces, without a centimeter deviation

A group of Japanese high school students have won an innovation contest by inventing a high-tech device that divides pizza into equal parts, not a centimeter apart.

A long-standing problem in the world is how to cut a circle cake into more than two equal parts, without a centimeter deviation.

The device is called "Let's Share the Joy".

Now, thanks to the ingenuity of a group of Japanese students from a high school in Oita Prefecture, southwestern Japan, it is no longer a problem to divide round cakes into completely equal ingredients.

Inspired by fierce family battles for the last piece of cake left, a group of three Kundong High School students invented a device that can evenly cut round cakes and pizzas. , regardless of how much the pie is cut.

The group of students created a tool that can calculate the most accurate cutting angle to divide the cake into equal parts by the required amount. The device, called "happy," was completed after a two-month process of testing and debugging.

Wataru Onoda, 16 years old, one of the members of the creative team shared that he was inspired to create high-tech gadgets from his own family. For one birthday, instead of cutting the cake into 7 pieces for 7 family members, Wataru Onoda's mother cut it into 8 slices. The leftover cake caused a war between Wataru Onoda and his sister.

This device divides the round cake into very precise equal parts.

Together with two others from the same school, 17-year-old Rinto Kimura and 18-year-old Mitsumi Zaimae, the team created a unique device that allows anyone to accurately divide a round cake into equal parts. .

The device consists of a turntable for the user to place the cake and a laser system that projects the exact angle, which can be easily adjusted to create the required number of cakes. All the user has to do is adjust an arrow-shaped slider to the desired number of slices and the laser beam will guide the knife into position to cut perfectly equal sections.

Using knowledge of geometry and mathematics, Wataru Onoda and his colleagues calculated the exact dimensions and angles to create the required slices to be equal, without a centimeter deviation.

The high-tech device of the Wataru Onoda team won the Oita Governor's Award for the 80th time within the framework of the Kufu Invention Expo, an annual event that aims to cultivate the spirit of creativity, intelligence high level and ingenuity of students.