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Step 3: Create a V-Ray 2-Sided material

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VRay2SidedMtl has Front and Back materials that are applied to the shaded surface according to its polygon normals. If no Back material is used, then the Front one is applied on both sides.

Let's enable the Back material option in the Parameters rollout of the VRay2SidedMtl node by ticking the checkbox.

Then, link the Front and Back materials that were created in the previous steps to their respective slots in VRay2SidedMtl.

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Step 4: Adjust the translucency

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Translucency determines which side (front or back) relative to the camera is more visible dominant in the render.

Select the VRay2SidedMtl node. In the Parameters rollout, set the Translucency the Translucency color to the desired value. Note that darker colors make the VRay2SidedMtl look more solid, while lighter colors make it more sheer and allow more light from the back side to pass through the object.

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Change the slider below the image to the right, to see a few different examples of the Translucency value in the 2-Sided material.

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Panel
borderStylenone

Translucency is set to black. No light is passing through and the back material is not visible.

Panel
borderStylenone

Translucency is mid-gray, allowing light from the back to pass through and making both materials visible.

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borderStylenone

Translucency is set to white, allowing all the light to pass through. Only the back material is visible in the render.

Align
aligncenter

Move the slider to see the example renders.

 

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Final image

 

Here's the final image with the Translucency set to mid-grey:

 

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