Building a Cardboard Planetarium

Building a cardboard planetarium seemed like the perfect project to distract during lockdown.
Built with two different types of isosceles triangles cut from A1 double walled cardboard. The 3m diameter structure comprises of a geodesic dome raised on rectangular pieces.
Find out more about this project here: / building-a-cardboard-p...
Music:
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Voyage - Atch / atch-music
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[@johnrogan9420]

Hexagons surrounded by pentagons...like a soccer ball!...well done...best explanation of a geometric dome ever!

[@RussellEveleigh]

Thank you!

[@kevinfager.]

Nice dude. That’s the way you raise some kids.

[@paulafshar]

This is a super Dad. I was impressed. Great Job.

[@johnrogan9420]

Top to bottom method...smart!

[@vex9596]

Every kid's dream. Very cool project!

[@mitchbryant8166]

You’re a genius. Thanks so much for sharing. I just bought a DS1 Planetarium. Projector. This will now be my next step.

[@RussellEveleigh]

Yes I imagine a decent projector would increase the magic! Good luck!

[@AdrianaGrineberg]

@@RussellEveleigh this awesome!!! I’m looking forward to making one but I have limited space. How big was the dome after fully assembled

[@RussellEveleigh]

Good luck Adriana! It was just about 3m across when finished. And about 2m tall. Have a look at the article I posted in the description for further details. You could use the tools there to easily scale down the size if needed. Thanks for watching and for your comment!

[@OrigamiMarie]

Wow, I don't usually do follow-backs, but we clearly have overlapping interests. I hadn't thought about making a very large cardboard rotegrity ball before, but now I think I'll have to consider it.

[@RussellEveleigh]

Ha! When I saw your channel I wondered why you didn’t have a million subscribers then I realised that maybe not everyone is obsessed as me! I found you on Reddit, then your YT and Etsy followed. I’ll be giving you rotegrity ball a go as soon as time allows! Look forward to seeing your channel grow, and I’ll certainly be watching with interest if you do any explainer videos. On the off chance others are curious, check out their shop here: www.etsy.com/uk/shop/OrigamiMarieArt

[@tombouie]

Apparently the best science is practical, social, fun, etc.

[@nilavanathi7336]

A fish-eye lens for your projector!!!

[@BeingLiving]

That’s so sweet man

[@lylestavast7652]

they'll be talking about this with your grandchildren as a grand adventure ! Nice work. I've actually thought of doing with with the ribs INSIDE and using it as a form to blow on a permanent fibreglass layer - I guess someone could add rebar over it and even use blown gunite and then paint it after it's cured.

[@RussellEveleigh]

Thank you! I didn’t except the dome to last too long but was quite surprised by how quickly it took on moisture and collapsed - we maybe had 3 or 4 days out of it. It was the morning dew that ended it despite it being warm otherwise. Good luck with your version- it sounds intriguing!

[@janenebendrick1632]

Well done!

[@justimagine2403]

Fleet Farms all have orange planetarium domes on them. This looks easier than my globe wedge pressboard method. Though mine turned out to be completely smooth inside.

[@mooseandnoona3485]

The bit about the the rain 🤣

[@sahilbakshi2]

A good way to make a real igloo in Greenland 😄😄

[@kathrynralli4557]

Sweet.

[@mooseandnoona3485]

This is amazing!!! I'm feeling very inspired

[@luponero2007]

Great!!!

[@huxmetalworks7371]

Great job love it

[@phugoidoscillations]

Celestia projected inside would be pretty fun. Also recommend "snapology origami" as a lockdown activity.

[@RussellEveleigh]

Have just Googled Snapology and it looks super fun. I'm going to give it a go. Thank you.

[@phugoidoscillations]

@@RussellEveleigh Takes time, but wow, the results are pretty remarkable. I recommend the Fiskars SureCut 154450-1009 for quicker cutting of consistent width strips. If you find a better approach or tool, I'd gladly take your feedback. I'm currently working on a 6-frequency dome to encapsulate an Ikea FADO lamp for a friend's kiddo.

[@Tjuice.13]

This is awesome! I think I might actually try this. I would like to make one that is maybe half of yours, or one that could fit maybe 2 people in it.

[@RussellEveleigh]

Good luck!

[@macariosanchez5640]

Genio.!! Genius.

[@e.davidq.guerrero8510]

Maravilloso!!!

[@johndeggendorf7826]

That’s beautiful, bro…a 3rd frequency icosahedron? 🤔 truncated it & added the vertical wall…very smart. It gives you some flat upright surfaces to hang pictures & stuff! And a pair of wings on top…that’s what I call bang for the buck. ✊☕️🎩🎩🎩

[@korea_gardener]

Wowwww~~ good^^

[@lucasdavid27]

Amei! Execelente ideia pra fazer junto com as crianças!

[@sciencepowerpoints]

Did you manage to get the video on the whole screen using a mirror?

[@RussellEveleigh]

No, predictably the whole thing only lasted a few days. A straight projection worked the best. I don’t think you could get the full curved effect on a budget. I keep thinking about it though.

[@elfantasma...1886]

Hermoso felicitaciones

[@RussellEveleigh]

Gracias

[@joshpit2003]

LOL at the end.

[@ChristianBorrman]

nice project - get a big tarp 😂

[@samdenningsrestaurant]

Look brillant ideas and what about waterproof?

[@huxmetalworks7371]

Oh I forgot to ask can you advise on the strut lengths for a dome approximately 16 feet in diameter 8 ft radius I don't know how to figure it out people say you can size up from a model but can't find out how to do that thanks for sharing

[@RussellEveleigh]

Thanks for your nice comment! I wrote up the project with more info - link in the description - but if it is just calculators you're after checkout this site: geo-dome.co.uk/article.asp?uname=calculation

[@TheRebelmanone]

I was thinking if you painted the outsides with exterior gloss paint and sealed the edges with silicone, then let it rain who cares.

[@RussellEveleigh]

A good idea! I'd love to make another one - just need to think about waterproofing and making quick to release connections.

[@johnrogan9420]

Rain is a definite problem!

[@brudo5056]

First of All: very Nice Project ! About this water problem: Applying Ship (Yacht) Varnish on the cardboard before assembly… also putting the bolts on the inside would turn the outside into a more smooth plane because now you have those upstanding sides creating a collection effect for water. Application of silicone in between the triangles, already mentioned by Tony Hardy, would seal the whole from further water penetration. Ofcourse you would have to apply an extra projection layer on the inside but I think it can be done. I also think if a person wants to create a larger structure with this cardboard material it will be more easy and safer to secure the bolts on the inside since you cannot climb on the outside or reach too high… anyway, I think it’s a very nice approach of a practical geodesic dome creation. Well done.