1) The origin of Gyeyeongbae.

It is a glass made to guard against heavy drinking, also known as Jeoljubae(Determination to drink less.).

The name of the glass means "a glass that is wary of overflowing," and if you fill more than 70% of the glass with alcohol,

It also has a symbolic meaning that everyone should flow down and be wary of human endless greed.

2) Principle of Gyeyeongbae. - Principle of siphon.

In the relay boat, a curved tube is used without tilting the glass. 

It contains the principle of siphon that allows it to flow to a low place. 

Siphon refers to a communication type tube that can easily move a liquid to another place using a pressure difference and gravity.

The reason why the water in Figure A moves to B is that the long side of the hollow cylindrical bar (the bent part from the middle) receives more gravity, so the downward force is greater than the short side. In the case of fluids, such as air and water, the pressure becomes the volume/cross-sectional area of the fluid passing per unit time, and suddenly the pressure increases because many substances pass through a narrow area. This is the principle of siphon.

3) The process of designing Gyeyeongbae.

Delete the central siphon tube and place it on the exterior. 

Due to the limitations of the existing manufacturing method, the siphon (tube) was forced to be placed in the middle, but, 

Free design is possible by applying the metal 3D printing method.

The siphon is inserted into the outer part of the glass and is used to make prosthesis. 

It was decided to be made of cobalt chromium, a metal material harmless to the human body.

                                                Delete the central siphon tube and place it on the exterior.

By taking advantage of the advantages of metal 3D printing, the waterway can be designed as freely as possible.

In other words, it is possible to increase the number of Gyeyeongbae designs to dozens to produce customized Gyeyeongbae.

Each unit price is in the mid-100,000 won range, and if you add post-processing, 200,000 won is what you want. 

You can produce a design relay.