Wooden Model of the Solar System - Orrery Kit. Free Global Shipping

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| 1,019 sales | 5 out of 5 stars

Wooden Model of the Solar System - Orrery Kit. Free Global Shipping

Bestseller

736.00 SEK

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Other people want this. 16 people have this in their carts right now.

Handmade

Materials

Baltic Birch Plywood, Paper, 4mm dowels, small piece of sandpaper

Description

A beautiful wooden model kit that assembles into a an orrery that models the rotation of the Earth and Moon.

A hand crank allows you to see how the Moon phases changes over the year (it can be calibrated for any year). Accurate simulation of the season due to the tilt of the Earth can also be observed.

See the orrery in action here:
https://gfycat.com/InfatuatedObedientAppaloosa

The kit contains all the parts and a full color instruction booklet. The kit comes in a box that is 15 x 18 x 1,5 cm (6 x 7 x 0.6 inches).

When done you will have an orrery that is approximately 16 x 19 x 11 cm (6.2 x 7.4 x 4.3 inches).

This is an awesome model that will not only provide joy during construction but will also teach a variety of principles. Included are explanations of celestial mechanics, the different ways of calculating the time the Moon rotates around the Earth and when the seasons change and why. A full explanation is provides on all the gear ratios used in the orrery is also provided.

A uniquely novel and educational model!

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FREE GLOBAL SHIPPING on this item.

A video with some instructions to make assembly easier is available here: https://youtu.be/ZMf3HDyvf7A

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The skill required to build this model is advanced.
A candle and glue is required for assembly. Full instructions can be downloaded here:
https://indukudesign.com/2018/02/15/orrery/

It is important to note that this orrery is made from wood with some limitations in accuracy. The “slop” between the gears means that the arrow can move 3-5 days without turning the gears (tighter gears will mean the mechanism will be hard to move). This means that the resolution is not accurate on a day basis but rather that is accurate within a 5 day interval. However, if the slop is taken into account and the midpoint of the arrow is taken, each time, when the Moon phase is set/read the accuracy is 99.94% per year. I.e. the orrery will be within the correct 5 day interval for 64 years and start to deviate by one day after subsequent rotations.

A full description on the accuracy, gear ratios and some of the celestial mechanics that are simulated is explained in the building instructions.

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Ready to ship in

1–3 business days

From

Sweden

Cost to ship

Free

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Meet your sellers

Robroy

Robroy

Owner of Induku

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132 reviews 5 out of 5 stars

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87sparker Jun 10, 2020

5 out of 5 stars
The shipping was slow only because of the pandemic but it was well worth the wait

Purchased item:

joann491 May 20, 2020

5 out of 5 stars
Still have not received. Hopefully it will get here soon. (gave a one star)
This was my previous statement. The sender has contacted me and I am very pleased with their response and willingness to work with me. I would purchase from this seller again.

Purchased item:

cjsgight May 9, 2020

5 out of 5 stars
Wonderfully crafted. Thrilled with this gift.

Purchased item:

eibhlinm Dec 31, 2019

5 out of 5 stars
Delighted! Thank you so much!

Purchased item: