You can create your own file by using modeling software (such as the softwares that are listed below), or you can find ready-made objects on many websites that cater to 3D printing by clicking on the 3D Files tab above.
Makerware- program that enables you to edit objects (scaling, rotating, duplicating, saving, etc...) and print them out on the MakerBot Replicator Desktop 3D Printer. It is a program that slices your digital file into very thin layers to prepare it for 3D printing. *Used at SJNY
Tinkercad- a free, easy to learn program that anyone can use to create, design, and print 3D objects from scratch. * Great for beginners
Cheetah 3D- a 3D modeling program for Mac OS X users. This allows you to jump right into the world of computer generated imaging which allows you to create your own objects from the ground up.
Blender- (for advanced users) a free and open source 3D animation suite. It supports 3D modeling, rigging, animation, simulation, rendering, compositing and motion tracking, and video editing and game creation.
Google Sketchup- (for advanced users) a 3D modeling software that allows you to draw lines and shapes and turn them into 3D forms. It also accommodable for Architecture, Construction, Game Design, Filming, Engineering, etc.. Google Sketchup allows you to stretch, copy, rotate and paint to make anything you like.
NIH 3D Print Exchange- U.S. Department of Health and Human Services — National Institutes of Health. The NIH 3D Print Exchange is an open, comprehensive, and interactive website for searching, browsing, downloading, and sharing biomedical 3D print files, modeling tutorials, and educational material.