There are several places to find 3D models on the internet. If you still learning how to design, but want something to print we have put together a list of some of the most popular online collections of objects for you.

Sharing is Caring

Thingiverse

Thingiverse is a wealth of shared user 3-D content of other users’ creations and you can share and upload your own.  Keep in mind that Thingiverse has many different types of creations, including some that can’t be made on a 3D printer (e.g. designed to be made on a lasercutter).

www.thingiverse.com

GrabCAD

GrabCAD is another community that was founded by mechanical engineers. It is also a place for engineers to share their talent, and after a free registration you can download files for free. Make sure you select the 3D Print filter as only some files have STL download options.

www.grabcad.com

Google’s 3D Warehouse

The 3D Warehouse has thousands of 3-D models but most of these files require a bit of a process to prepare them for 3D Printing. If you are into 3-D printing some of these models, have a read of the “Preparing 3D Warehouse files for 3D printing” 
sketchup.google.com/3dwarehouse

Parts Libraries

3D Content Central

If you are looking for a 3D model of a spare part or component then there are thousands of parts that can be used here. Most of the parts don’t require much clean up to get them ready for printing on your 3d printer. Free registration is required before you can download any CAD models.

www.3dcontentcentral.com

Trace Parts Online

Another parts library for the engineering 3D Cad files and requires free registration.

www.tracepartsonline.net

Other

3DTin

Like Tinkercad, 3D Tin is another cloud based CAD package. This is more powerful than TinkerCad, but also has a steeper leaning curve. Once again you can browse though other inventors designs.

www.3dtin.com