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ONE of my new projects requires a DOME: I need a simple way to make one. Any Help? Answered

I need a dome, and it need not be really big.  It DOES need to be made of a thin enough material to have multiple hole poked or drilled into it (fairly SMALL holes actually).  I am at a loss as to what to use.  It needs to be opaque (even if the light beneath it is very bright).  I would like to create a kind of a planetarium in my room, but have it mobile so I can move it into another room if need be. 

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sampowell
sampowell

8 years ago

They are not expensive:

http://www.amazon.com/Astrostar-Astro-Star-Projector-Cosmos/dp/B003BK59Y8



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Goodhart
Goodhart

Reply 8 years ago

The ones that display a specific "section" of the sky, as it really is, can be however. But price is not exactly what I am after to save, I am looking into "how" to do it :-)

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sampowell
sampowell

8 years ago

Get the dimensions for a dome (http://www.geo-dome.co.uk/article.asp?uname=calculation), more frequency the smoother it will be. Use 1/2" R-Max or Thermax board. It is a polyiscocyanurate insulation material with aluminum film bonded to both sides. Measure accurately and cut triangles from it with a mat knife or pocket knife. Use aluminum tape (not FSK tape) to assemble the pieces. Tape both sides of joint. It will be light weight and very reflective (and somewhat weather resistant). If you break a piece, simply tape both sides of the break and it is good as new. To paint, I believe you can use a latex paint. While you are at it, check out Buckminster Fuller. Good Luck.

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Goodhart
Goodhart

Reply 8 years ago

Yes, thanks I will keep that in mind if I go to build a reflector or satelite antenna, but this was to be the covering for a project to project the stars on my bedroom ceiling....still some of the info looks useful..

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sampowell
sampowell

Reply 8 years ago

Sorry, I was thinking you needed something larger. How will you locate the holes on the surface of your half dome?

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Goodhart
Goodhart

Reply 8 years ago

I am not sure as yet......so far, this is only a thought experiement :-)

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kelseymh
kelseymh

10 years ago

I have a stainless-steel mixing bowl which is almost a perfect hemisphere.  It has a flat bottom, and a nice flat lip all around, which could be used for anchor holes.  A good cookware store should have them in a variety of sizes.

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Goodhart
Goodhart

Reply 10 years ago

Ah, yes thank you. I was having a real brain seizure here (even though the pain is mostly managed, it can become irritating at times; and definitely distracting). <br /> <br /> That would suit me very well, and so if I can get out to some garage sales before the season ends here (we already have snow just a few miles north of me), I can get one on the cheap. :-) <br /> <br /> <div id="refHTML"> </div>

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Goodhart
Goodhart

Reply 10 years ago

I'd select this as a best answer except I don't seem to have the option....<br /> <div id="refHTML"> </div>

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Kiteman
Kiteman

Reply 10 years ago

<h5 style="color: Yellow;"><small>(fixed)</small></h5>

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Lithium Rain
Lithium Rain

Reply 10 years ago

Captain HTML to the rescue!

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Kiteman
Kiteman

Reply 10 years ago

(It wasn't HTML, it was screen-shot-and-paste)

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Lithium Rain
Lithium Rain

Reply 10 years ago

(I meant with the yellow :P)

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Kiteman
Kiteman

Reply 10 years ago

<h5 style="color: Purple;">Oh.</h5>

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Lithium Rain
Lithium Rain

Reply 10 years ago

OIC, you use the WIZIWIG editor, not the actual markup...

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Kiteman
Kiteman

Reply 10 years ago

I'm no code-monkey, I know almost zero html.

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kelseymh
kelseymh

Reply 10 years ago

HTML is pretty much the simplest true markup language you could learn. You can either learn by example from some simple HTML pages (like <a href="http://www.slac.stanford.edu/~kelsey/">mine</a>) or read through the <a href="http://www.w3.org/MarkUp/Guide/">documentation</a> at the Worldwide Web Consortium (W3C)'s site.<br />

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Goodhart
Goodhart

Reply 10 years ago

I learned it way back when, by taking screen shots of web pages and then looking at the source code. Eventually, I got a book in HTML and DHTML when I had to learn JavaScripting for my job. <div id="refHTML"> </div>

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Lithium Rain
Lithium Rain

Reply 10 years ago

Haha, and here I thought you'd been holding out on me all this time...

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Lithium Rain
Lithium Rain

Reply 10 years ago

That's because it's a forum topic and not a question. ;)

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Goodhart
Goodhart

Reply 10 years ago

Oh, I had meant it to be a question.....<br /> <div id="refHTML"> </div>

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kelseymh
kelseymh

Reply 10 years ago

I often have an idea of something I need for a particular project, and only look for things in that arena.  Seeing all of the different projects here has helped me to recognize, and even "invent," ways to repurpose things for cost-savings or for simplicity.

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Goodhart
Goodhart

Reply 10 years ago

When I was much younger I was very eclectic, but it seems like I haven't practiced enough lately and the skill is falling into disuse. <br /> <div id="refHTML"> </div>

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PKM
PKM

Reply 10 years ago

<br /><img src="https://www.instructables.com/static/img/bestAnswer.gif" />

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Kiteman
Kiteman

Reply 10 years ago


best answer small.JPG
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lemonie
lemonie

10 years ago

Paper, PVA, large sphere (e.g. PVC ball)?

L

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Goodhart
Goodhart

Reply 10 years ago

I will have to look into that...<br /> <div id="refHTML"> </div>

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dannyces
dannyces

10 years ago

hello you could also try a tupperwear mixing bowl. i have a pretty large one its white and will not let any light though but is soft enough to drill quite easy
Danny

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Goodhart
Goodhart

Reply 10 years ago

Thanks<br /> I would have to look into that. All the ones I have are translucent and let some light through. <div id="refHTML"> </div>

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dannyces
dannyces

Reply 10 years ago

well i dont know if its "tupperwear" per say but a get a set of about 5 different sizes from kmart for like 10 bucks. plus they all came with lids some that also help with your project as you can use the lid as a base and mount stuff to it making it easier to move around.
Danny

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Goodhart
Goodhart

Reply 10 years ago

Understood, anything that got me thinking in the right direction (<em>bowl</em> instead of simply <em>dome</em> ) I thank you. <br /> <div id="refHTML"> </div>