3D Printed Model - Sun, Moon and Earth

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  • Опубліковано 15 вер 2024
  • I recently built this Model of Sun, Earth and Moon with 3D printed components.
    I did not get good performance with 3D printed gears so decided to use laser cut acrylic gears instead.
    This round dial is directly printed on white acrylic sheet. Outer circle has an English calendar while the inner one indicates the zodiac.
    Model is locked with the dial by placing these two small screws in the slots here.
    One full rotation around the SUN completes one year. Moon completes 12.37 rotations in the same period.
    It was not possible to build the model to scale as far as size and distances are concerned.
    To keep things simple, Earth’s axis is tilted at 15 degrees instead of 23 and half.
    The Moon's orbit is tilted at an angle of 15 degrees while in reality it is only 5 degrees.
    15 degrees tilt was necessary to take care of the up and down movement of the moon during its movement around the Earth.
    Zodiac transitions of the SUN can be studied with the help of this long pointer.
    Marking on the handle indicates the position of Earth with respect to the Sun as per English Calendar.
    Moon can be made to revolve around the Earth without any titled orbit as well.
    Earth’s axls is positioned as per the four key positions during the year
    21st March
    21st June
    23rd September
    And
    22nd December
    Design is done with FreeCad while parts are printed on Ender3.
    Planning to integrate it with a motor in near future.
    Thank You
    #3dprinting
    #astronomy
    #Sunmoonearth
    #workingmodels

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