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

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. 
 
 

Picture of ONE of my new projects requires a DOME: I need a simple way to make one. Any Help?
planetarium1web.jpg
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sampowell6 years ago
They are not expensive:

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



Goodhart (author)  sampowell6 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 :-)
sampowell6 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.
Goodhart (author)  sampowell6 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..
Sorry, I was thinking you needed something larger. How will you locate the holes on the surface of your half dome?
Goodhart (author)  sampowell6 years ago
I am not sure as yet......so far, this is only a thought experiement :-)
kelseymh8 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.
Goodhart (author)  kelseymh8 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>
Goodhart (author)  Goodhart8 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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