Earth Moon Model

Earth Moon Model

Education

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Description

I constructed the model true to scale except of the distance of Moon Earth.
In reality, the distance Earth Moon is twice as size, but then the rod has
become too long. I could have made the moon and the Earth half as big, but the moon would be barely recognizable. That's why I chose this solution.

I have designed the gear ratio so that when the moon turns once, the Earth turns
29.5 times around its own axis.

The gear mechanism was designed to be the same as the direction of rotation of Earth and moon. (as in reality)

If you light the model with a flashlight, you can see the shadow formation of the Earth and the moon very well.

It is best to screw the model with 2 countersunk head screws (M5) onto a wooden plate etc.

In order to spin the model, you have to spin the earth adapter or the gear-wheel 2/3.

When you assemble the model it is very important that you don't screw the slotted screw too tightly. The gear must be rotate freely.

For the model you need the following material:

2 countersunk head screws M5
Print each part once

Materials and methods

EPR InnoPET
print temperature 210°
build plate temperature 70 °

I have taken the following parameters for the printouts:

Earth holder
Layer height 0.2mm
Wall thickness 1.6mm
Infill 30%
Build plate adhesion raft
Support yes
print speed 50

Earth
Layer heigth 0.1mm
Wall thickness 1.6mm
Infill 0%
Support yes
Build plate adhesion raft
print speed 40mm/s

Moon holder
Layer height 0.2mm
Wall thickness 2.8mm
Infill 30%
Build plate adhesion brim
Support none
print speed 40mm/s

Moon
Layer heigth 0.1mm
Wall thickness 1.6mm
Infill 50%
Support none
Build plate adhesion brim
print speed 40mm/s

Adapter earth
Layer heigth 0.2mm
Wall thickness 1.6mm
Infill 30%
Support none
Build plate adhesion none
print speed 50mm/s

Slotted screw
Layer heigth 0.2mm
Wall thickness 1.6mm
Infill 30%
Support none
Build plate adhesion none
print speed 50mm/s

Hexagon nut
Layer heigth 0.2mm
Wall thickness 1.6mm
Infill 30%
Support none
Build plate adhesion none
print speed 50mm/s

rod
Layer heigth 0.2mm
Wall thickness 1.6mm
Infill 30%
Support none
Build plate adhesion none
print speed 50mm/s

model holder
Layer heigth 0.2mm
Wall thickness 1.6mm
Infill 30%
Support none
Build plate adhesion none
print speed 50mm/s

gear-wheel holder
Layer heigth 0.2mm
Wall thickness 0.8mm
Infill 30%
Support none
Build plate adhesion none
print speed 50mm/s

gear-wheel 5
Layer heigth 0.2mm
Wall thickness 0.8mm
Infill 30%
Support none
Build plate adhesion none
print speed 50mm/s

gear-wheel 4
Layer heigth 0.2mm
Wall thickness 0.8mm
Infill 30%
Support none
Build plate adhesion none
print speed 50mm/s

gear-wheel 2/3
Layer heigth 0.2mm
Wall thickness 0.8mm
Infill 30%
Support none
Build plate adhesion none
print speed 50mm/s

gear-wheel 1
Layer heigth 0.2mm
Wall thickness 0.8mm
Infill 30%
Support none
Build plate adhesion none
print speed 50mm/s

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Comments

B750e259b78e757adeb53e0da9b59ea1?default=blank&size=40BuchnerB added this to the Mechanical and Engineering collection ago
Fe5e1a57d763234c8f459ea21a929ad6?default=blank&size=40PeacefulDragon added this to the Lovely to have collection ago
531235c7420172ceddd698df9b5da7fe?default=blank&size=40Stephen Brew added this to the Misc Stuff collection ago
3f91a5ecfa043cb9f2de554068c5c8fa?default=blank&size=40Rac Coun added this to the Astronomy collection ago
Mini logoAikidoka published this design ago