Vray material for resin light box...any tips? help appreciated!

[Terri Brown]

Hi everyone,

 

I need to create a shader for a light box similar to the ones in the following image:

 

any tips?? I've started with a VRay mat with self-illum and translucency on (would you put a falloff map on one of them to create the darker less-lit edges?). And would you recommend placing an actual light within the box, or relying on the material alone for illumination?

 

Any suggestions would be GREATLY appreciated!

thanks

[Chris MacDonald]

I'd use a VRaylight inside the box, or whatever and use a simple VRaymaterial within a VRay2sidedmaterial. It's by far the quickest and easiest way to simulate this effect.

 

Just a quick google image search for "Vray 2 sided" throws up the exact kind of things you're looking for...

 

http://www.spot3d.com/vray/help/150SP1/examples_vray2sided.htm

[cg_Butler]

I did this recently for some small cube box seats that were internally lit. I used a standard Vray material with really blurry translucency, spherical vray light inside and they looked great. Took quite a while to render though, but worth the wait.

[andstef]

i'm working on a similar project, i'm designing a lamp made out of sandblasted glass (or a similar material) and for the first time used the method described above by Andy, and the render time was unacceptably long, so I did the following:

I modeled a "shell" around the lamp's body, 0.01mm larger, inverted the normals so they pointed inside, unwrapped UVW, assigned a white material, and rendered to texture. I used the texture inside a vray light material assigned to the "shell" only this time I placed the "shell" inside the lamp, just behind the glass (this time clear). The difference was imperceptible. There is a tutorial on evermotion.org about baking textures.

 

I hope this helps,

 

Good luck!

[Terri Brown]

wow thanks guys - will try the above. Just a question though:

if i use the vray2sided mat, for the vray mtl plugged into my frontMtl slot - should i make it slightly transparent (bring up my refraction clr), or is it unneccessary?

 

i've been using mental ray for 10 years, so the Vray Mtls are new to me!

[Chris MacDonald]

You don't have to use transparent to be able to see the light from the back side.