Halo Array scaled one in sixty million

Before downloading anything, please read the instructions, the list of files is long.
These are the models of the ring megastructures of the videogames saga Halo. The models were made involving different techniques and I spent several days modeling; so if you make any of these models I would really appreciate any kind of contribution, like tiping or at least posting the makes here. I have not test all parts of every model so any feedback would be useful to me, I will try to correct any failture as fast as I could. Many parts may not be manifold, which means that you would have to repair them before printing; this is because there are so many parts that I couldn't check eveyone. Don't worry, many slicers have the capability of repairing non-manifold .stl, or you could use Meshlab, or Microsoft 3D builder to repair them instead. If so, please contact me and I will try to repack with the repaired parts.
The file's names explained: name_1_x_10_y.stl is 1 : x * 10^y. So _1_6_10_7 is 1:600000000 or one in 60 million. If two rings are the same model, like Installation 04 and Installation 05, the numbers are stacked like this: installation_04_05_1_x_10_y.stl .
The structures were made mainly with SolidWorks, I used as references many artworks and images from the games. The topography of the installations was made using MATLAB R2016a with topographic maps made arbitrary by me, mixing several other maps, but not following any distibution from the games. Since the rings are flat, the topography may result too thin to be easily discernible, I recommend to paint the continents. Each ring has its own topography:

• Installation 01 has a Martian terrain, desert like, lightly cratered, I cut a rectangle of the global topography of Mars.
• Installation 02 has a water-ice terrain, I used parts of Charon topography.
• Installation 03 has a Venus like relief.
• Installation 04 is the classic Halo, its surface is Earth like. It is the same model for the Installation 05 and 07
• Installation 06 has a Lunar landscape, I used the topography of Mercury instead.
• Installation 08 is an under construction halo. The under-construction parts were made with Solidworks, the rest is Venusian terrain, so these parts are the same as Installation 03.
• Installation 00 the gigantic star like structure, named also The Ark or Lesser Ark; it's the responsible of creating the other halos. Its topography is a mix of several parts of Earth combined with some of Charon
• Strip Mining Moon, a planet sized object, called "moon" despite not being orbiting any planet, nor even a star. The topography of this planet was made "randomly" from scratch.

Assembly

Every model in this post is big and they must be made in various parts. The interface between parts is simply flat, and the only method recommended for join them is gluing with cyanoacrylate based cements or your favourite gluing method. There are various scales available for printing the models, and because of the large amount of files I decided to pack all of any scale in .rar packs. Every ring structure has its topography repeated every quarter, so you have to print four times every part to make the complete ring. Here is a guide on how to assemble each scale:

One in four million scale models

This is the biggest scale, the rings are 2.5 m diameter. The Installation 00 is too big for this scale. In this scale the rings can be compared with big asteroids and small moons. You can download the package of files in this scale here. The parts are numbered from 1 to 8, which makes a total of 32 parts:

One in 4 million scale models assembly.

One in ten million scale models

In this scale the rings are 1 m diameter. The Installation 00 is not available in this scale. In this scale the rings can be compared with medium sized moons. You can download the package of files in this scale here. The parts are numbered from 1 to 4, which makes a total of 16 parts:

One in 10 million scale models assembly.

One in twenty million scale models

In this scale the rings are 50 cm diameter. The Installation 00 is not available in this scale. In this scale the rings can be compared with big moons like Earth's one. You can download the package of files in this scale here. The parts are numbered from 1 to 2, which makes a total of 8 parts:

One in 20 million scale models assembly.

Installation 08

The installation 08 has about a quarter of its circumference "unfinished". For any of the previous scales, the Installation 08 parts must be complemented with the Installation 03 parts, in the way it is shown in the image:

Installation 08 assembly, it must be "filled" with the Installation 03 parts

One in sixty million scale models

In this scale the rings are 17 cm diameter and they have not relief on their surface. This is because of the narrowness of the model, just 5mm. On the other hand, the rings in this scale can be made in one piece. The Installation 00 and the Mining Moon must be made in pieces; the first is 2 meters wide, but 3mm thick in some parts, so an smaller scale is not possible. In this scale the installations can be compared with rocky planets like Earth, Mars, Mercury or Venus. I had the intention of making the model of the Installation 00 and the Mining Moon scaled down to one in 120 million (the model a half of its size of this one), which would result in a smaller faster printable model, but I resigned this idea because the thinnest parts would be too thin in this scale to be safely printed. However, if you want to try this 1:120M scale you just need to scale every part to 50% or 0.5. You can download the package of files in this scale here. The Installation 00 is splited into 32 parts:

Installation 00 assembly.

I spend part of my time making these models, letting them available and free for everyone. If you want to support my work, you can contribute with me here:

Other astronomical objects

Object	Scale [1:x] K = 103 (thousand) M = 106 (million) G = 109 (billion)	Image
Inner Solar System
Mercury	20M, 60M, 120M
Venus	60M, 120M, 250M
Earth	60M, 120M, 250M
Luna	10M, 20M, 60M
Mars	20M, 60M, 120M
Phobos and Deimos	200K, 500K
Man-made
Salyut 7	40, 48, 80, 160
Near Earth Asteroids
Moshup and Squannit	8K, 20K, 40K
Ra-Shalom	20K, 40K
Castalia	8K, 20K, 40K
Bacchus	8K, 20K
Bennu	3K, 8K
Ryugu	3K, 8K, 20K
Geographos	40K, 80K
Phaethon	40K, 80K
Itokawa	3K, 8K
Eros	80K, 200K, 500K
Nereus	3K, 8K
Didymos and Dimorphos	8K, 20K
Mithra	20K, 40K
Golevka	8K
Toutatis	40K, 80K
Main Asteroid Belt
Gaspra	200K
Annefrank	40K, 80K
Braille	20K, 40K
Vesta	2M, 4M, 10M
Šteins	40K, 80K, 200K
Iris	2M, 4M
Hebe	1M, 2M, 4M
Lutetia	500K, 1M, 2M
Julia	1M, 2M, 4M
Mathilde	500K, 1M
Juno	2M, 4M
Ceres	4M, 10M
Pallas	4M, 10M
Kleopatra	2M, 4M
Ida	500K, 1M
Psyche	2M, 4M
Interamnia	2M, 4M
Hygiea	2M, 4M, 10M
Antiope	1M, 2M
Jovian System
Jupiter	500M, 1G
Amalthea	2M, 4M
Thebe	1M, 2M
Io	20M, 60M
Europa	20M, 60M
Ganymede	60M, 120M
Callisto	60M, 120M
Saturn System
Saturn	500M, 1G
Pan, Daphnis and Atlas	80K, 200K, 500K, 1M
Prometheus and Pandora	1M, 2M
Janus and Epimetheus	2M, 4M
Mimas	2M, 4M, 10M
Methone, Anthe and Pallene	40K, 80K
Enceladus	4M, 10M
Tethys	4M, 10M, 20M
Telesto and Calypso	200K, 500K
Dione	4M, 10M, 20M
Helene	500K, 1M
Rhea	10M, 20M
Titan	60M, 120M
Hyperion	2M, 4M
Iapetus	10M, 20M
Phoebe	1M, 2M, 4M
Uranian System
Uranus	250M, 500M, 1G
Puck	1M, 2M, 4M
Miranda	4M, 10M
Ariel	10M, 20M
Umbriel	10M, 20M
Titania	10M, 20M
Oberon	10M, 20M
Neptunian System
Neptune	250M, 500M, 1G
Larissa	2M, 4M
Proteus	2M, 4M, 10M
Triton	20M
Comets
Tempel 1	40K, 80K, 200K
Wild 2	40K, 80K
Churyumov-Gerasimenko	20K, 40K, 80K
Hartley 2	20K, 40K, 80K
Borrelly	40K, 80K, 200K
Halley	80K, 200K
Centaurs and TNOs
Hidalgo	500K, 1M
Chariklo	2M, 4M
Pluto and Charon	10M, 20M
Styx, Nix, Kerberos and Hydra	500K, 1M
Haumea, Namaka and Hiʻiaka	10M, 20M
Arrokoth	200K, 500K, 1M
Largest TNOs and their moons	10M, 20M
Extrasolar
Exoplanets	120M, 250M, 500M
Nearest white dwarfs	120M, 250M
HD 189733 b	1G
Pulsars	200K, 500K
Cygnus X-1 accretion disk	10M, 20M
M87* photon ring	1.5*1014
Sky maps
Heliosphere	7.5*1013, 1.5*1014
Constellations	-
CMBR	2*1028
Ancient
Earth (540 Mya to 20 Mya)	60M, 120M, 250M
Luna (4 Gya)	20M, 60M
Speculative
Planet Nine	250M, 500M
Cube planet	60M, 120M, 250M
Science Fiction
Ghroth	4M, 10M
Arda	60M, 120M
B612	10, 20, 32, 40
Mesklin	500M, 1G
Arrakis	60M, 120M
Borg cube	8K, 20K, 40K
Pern	60M, 120M
Europa Monolith	200K, 500K
Leonora Christine	500, 600, 1K, 3K
Rama	80K, 200K, 500K
Death Star	500K, 1M, 2M
Starkiller Base	2M, 4M, 10M
Eternia	60M, 120M
Visitors mothership	20K, 40K
Wheel of Time Earth	60M, 120M, 250M
Nirn, Secunda and Masser	20M, 60M, 120M
ID mothership	2M, 4M, 10M
ID troop transporter	200, 350, 500, 1K
Heptapod spaceship	1K, 3K, 8K
Gaijin flowership	3K
Red Moon	60M, 120M
Halo Array	4M, 10M, 20M, 60M
Gem Homeworld	120M, 250M, 500M
Citadel of Ricks	200K
The Skeld	40, 80, 160, 350, 500
Misc
Mars (1962 reconstruction)	60M, 120M
Flat Earth	250M
Expanding Earth	60M, 120M
Spaceship of Ezekiel	80, 160