DBL Checked and yes vMaterials is FREE. The assumption is that you normally have to purchase a $300 plug in to use them. The great thing about MDL is that the same Material works in any app using the IRAY. so the same MDL from Rhino will work in 3ds , may and DAZ. The only issue is DAZ uses the MDL behind the scenes, so you need to use them in the shader mixer to get a material into your respective shader libraries. As I dig deeper into the Shader Mixer and how the diferent MDL bricks work with each other I will ahe more and more fun with it.

aka MCDLabs
also known as Daniel Merrill a grumpy old disabled Jarhead.
checkout my freebies at
https://www.sharecg.com/pf/full_uploads.php?pf_user_name=mcdlabs