How can i achieve this material look

[Julio Verani]

Hello people

 

I'm trying to make a new model here for a project and i need to achieve the look on the below image (the turquoise glass). Any ideas?

 

 

I tried simple glass using exit color but can't get anyplace near it.

 

Thanks in advance!

[RyderSK]

Exit color shouldn't be touched ;- ) That's the color refraction will get after ray bounces run out (if you keep low limit on them). This is technical hack, not artistic parameter.

 

Use "Fog" color (Vray's 'absorbtion'). Choose the color you see on the image, and then adjust multiplier until it looks as desired.

[Julio Verani]

Hello Juraj,

 

Well, i tried just what you said, played around with the settings but, the result is different.

 

 

I guess the problem is the "solid" part inside the glass, i just can't figure out how to manage that, even thought about putting another solid inside, but i can't replicate the one i did, since it was kind of "random modeled".

 

This is a real challenge for me, sure it is. But any help would be very welcome since my deadline is still running close.

 

Thanks in advance!

Edited July 15, 2016 by jverani

[RyderSK]

The lower part of glass might not be refractive actually, with gradient towards the edge where it does. It might require doing mask for this part.The glass part will then need much less absorbtion.

[Julio Verani]

Well, then you got into something i don't quite understand. I've never used mask before and need some help with it, can you?

[Francisco Penaloza]

I saw one time someone doing something similar, and what they did was creating one layer of glass, then sand it and paint, then sandwich other layer of glass. Of course all this while is very hot so when it glues you can't see the seams.

Coming from that experience I can imagine (I have not tried my self) that a coated material may work better than a single material.

so starting with a semi solid mat with the color/texture turquoise then apply a glass coat.

Other way could be to use two meshes, one for solid glass and the other a single side mesh with the semi solid turquoise color.

 

Hope this help.

[Larissa Holderness]

I have a difficult time with glass as well ... but, wouldn't playing with the refraction amount also help?

Edited July 15, 2016 by digitalputty
missing words

[RyderSK]

What Francisco write is correct how this material is constructed, both suggestions could work.

 

 

1) In reality, this is either single glass with thickness, with top and sides being polished surface, and the volume being refractive with some absorbtion or sandwiched glass like Franciso write, I honestly can't tell from the picture :- )

2) The underside part in first case, or the inside in second option, is brushed and painted, so it's not refractive, or only partially.

3) The mask. The underside (or inside, I don't know), isn't consistent in texture across whole surface, it does get actually refractive (although still brushed, so it appears frosted) towards the edges, so you can see-through from the upper polished part. A painted B&W texture, or EdgeTexture or maybe even inverted AO mask in refractive slot will make the underside surface go from opaque to transparent near the edges.

 

Honestly, making this convincingly could be tough :- ).

[Julio Verani]

I saw one time someone doing something similar, and what they did was creating one layer of glass, then sand it and paint, then sandwich other layer of glass. Of course all this while is very hot so when it glues you can't see the seams.

Coming from that experience I can imagine (I have not tried my self) that a coated material may work better than a single material.

so starting with a semi solid mat with the color/texture turquoise then apply a glass coat.

Other way could be to use two meshes, one for solid glass and the other a single side mesh with the semi solid turquoise color.

 

Hope this help.

 

Hello Francisco, i've seen the way it's done in reality, but as i said, i deformed this mesh randomly, so i can't remake it to apply the concept of a sandwich.

 

I tried the coated material, but the core takes too much space, so to speak, in the original image i can see that the glass coat have different thickness thru the object (in relation to the core) and the blend material keeps the coating constant.

 

I think i'll have to do it all over again but with 2 object, making the same deformations and pray that the result becomes more like the original.

 

What Francisco write is correct how this material is constructed, both suggestions could work.

 

 

1) In reality, this is either single glass with thickness, with top and sides being polished surface, and the volume being refractive with some absorbtion or sandwiched glass like Franciso write, I honestly can't tell from the picture :- )

2) The underside part in first case, or the inside in second option, is brushed and painted, so it's not refractive, or only partially.

3) The mask. The underside (or inside, I don't know), isn't consistent in texture across whole surface, it does get actually refractive (although still brushed, so it appears frosted) towards the edges, so you can see-through from the upper polished part. A painted B&W texture, or EdgeTexture or maybe even inverted AO mask in refractive slot will make the underside surface go from opaque to transparent near the edges.

 

Honestly, making this convincingly could be tough :- ).

 

So i'll try to follow these steps first thing in the morning, but it'll be tough, really.

 

Thanks for the help guys, ill keep you posted and Larissa, i tried that too, the result wasn't any closer than the other things i've tried, but thanks a lot!!

Edited July 15, 2016 by jverani