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Thread: translucent plastic

  1. #1
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    Default translucent plastic

    Hi all,

    I'm trying to render an interior-lit column of milky, light diffusing plastic, and I can't seem to get the light distribution to be more complex; i.e. it just looks like I applied a light material to the exterior of the column, or like a glass tube with a beam of light suspended in it. I've tried IOR, translucency, refraction glossiness settings to no effect. The image below is what I'm getting with settings I would think would at least approach what I want, also below. Couldn't find anything on vraymaterials.de, either. I know I'm going to bruise my forehead with my palm once I figure this out. Thanks in advance!

    Tom
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    Veteran Member Fran's Avatar
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    Frances Gainer Davey
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    Default Re: translucent plastic

    Have you tried the VRay2SidedMtl?

    http://www.spot3d.com/vray/help/150S...vray2sided.htm

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    Default Re: translucent plastic

    Did you make the light invisible? Or make sure "affect reflections" was unchecked?

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    Default Re: translucent plastic

    Thanks so much, these are getting me much closer.

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    Default Re: translucent plastic

    Another option to using a 2 sided mat would be to add a shell modifier to your cylinder to actually give it a thickness.
    Also mabey make the fog colour something other than white and turn it's multiplier down way low like .1 - .01.
    Your on the right track with the refractive glossiness. For this effect I'd usually put it at about .5....
    One more thing, if your using a VrayLight Mat for the light inside the pillar try adding a gradient to change the colour slightly to make it look a little less light a constant light throughout.
    Hope this helps...
    Any new renders?

  6. #6
    Senior Member Thablanch's Avatar
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    Default Re: translucent plastic

    http://www.richardrosenman.com/project/?cid=85

    a really nice tutorial, may be usefull in your actual situation

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    Default Re: translucent plastic

    Thanks again. Since they wanted it yesterday, I ended up photoshopping a bit. But this is something I will definitely be coming back to as far as light fixture diffusers etc., so I appreciate the input.

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    Default Re: translucent plastic

    Better late than never, eh?!

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