Kineme3D provides support for 3D models in Quartz Composer.
Not only can you render your models, you can also deform them in various ways. Twisting, Gravity, Scaling, Bend Boxes, and Quantization are a few ways these can take place. You can also blend between two models with the same number of vertices, creating smooth motion for keyframed animation.
To get the technical info or download a trial, visit kineme.net.