VrayOpacityMtl

Quite the same as VrayBumpMtl, but for opacity. Can be very useful if you have to add a cutout to a complex multi layered material.

Regards,
-Eugenio

You can use a VRayBlendMtl material with the base slot empty.

Best regards,
Vlado

Hey that’s a great tip Vlado!

Thanks!
-Eugenio