Photoshop: Making a 3D image in CS4 (for dummies)

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I'm trying to make an image that I will use as a 3D model in a video.  It seems simple enough to me, but having run through a couple tries, I see I'm out of my depth and need some expert advice.

Okay, first off, I know I'm working with an old version.  I'm a disabled vet and, well, no money.  There I think that'll cover any wondering why I'm in CS4.

The object I'm trying to make is best described as a parachute or sail.  The tricky part is that it is a big one that has a small one attached to it, 180° the other way.  Sort of an hourglass kind of thing with one end 10 times the size of the other.  The two, slightly curved, end are to be attached by 20 to 100 strings.

I've made a rudimentary 2D image (from web images) which I'm hoping explains better than these words:

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Barry Carver

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Posted 2 years ago

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Christopher Rotter

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Do you have an actual image of what you are trying to make ?
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Christopher Rotter

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You want to make the solar sail spacecraft shown what appears to be on the Johnny Carson show in 3D within Photoshop; or you want to make it strictly from images ?
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Barry Carver

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I need to make a virtual one, as depicted in the images above.  I need to use this 3D image in a video.

The sail, and payload-holder, are to be made (someday) out of super-reflective material.  It will all be one piece of ...maybe... mylar.

In space, with the solar wind against the round sail, it will balloon-out slightly, and the opposite end will similarly balloon-out to hold the payload - which might be as big as a golf ball.
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Barry Carver

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The image from the Carson show, is just to provide context.  It's a small model that's been around a long time.
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Christopher Rotter

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Something like this ?
http://nasa3d.arc.nasa.gov/detail/sol...
You'd need to download the, in this case, Lightwave model and convert it to OBJ then import into Photoshop, then you can manipulate the 3D object any way you want, be sure the object has UV's otherwise you won't have complete control over shading.

To do the conversion, download MeshLab. There is no way to make a complete 3D object within Photoshop, you have to build your 3D object outside of Photoshop and import; although basic objects, glass, wine glass, cube around those limitations for object creation can be built within Photoshop although depending on your computer spec you can really bring your computer to a crawl in this case you are using CS4; I'd suggest importing an OBJ file using the programs mentioned, they will be fast to use and you can begin to expand on your creation how you see fit.
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Barry Carver

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Yes, something like that.

I'll try downloading this, and the program, to see if I can make it fit our parameters (round sail and small sling at the pointy end).

I was hoping it would be doable in PS.

Thanks.