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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. 


They are not expensive:


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 :-)

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.

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?

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

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.

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>

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

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

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

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

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 />

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>

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

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

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

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.

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>

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

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


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

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

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>

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.

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>