There are lot many 3D engines made in flash floating around the web now. I've made a similar engine, but I've tried to put it at some use. I wanted to make some actionscript 3D models for my engine and I had more or less map co-oridinates in my mind only so I came up with this modeler. You can model a 3D object online, save it and even use it in your website. To see it's capabilities, browse
few objects of the gallery.
In the package I've provided 3d_model_maker.swf, using which you can design
anything. You can use 3d_viewer.swf to load any of your models in a flash movie! I've also provided 8 models to start with :) I've also included all source files (FLA)