...
http://www.yeggi.com/ - Yeggi is the google for 3D model databases. It searches all the others listed here.
https://www.ameede.net/ - Found a new one. It has sections for 3D Models and for CNC/Laser files.
https://grabcad.com/ - Nice engineering models, but not necessarily focused on printing. These you may have to modify in a CAD package before printing.
http://www.turbosquid.com/ - Turbo Squid. Last resort site. All models are paid and there is no way to sort by printable items.
In case I missed some, here are some more.
Site | Type | Free/Paid | #Models | #Visitors |
---|---|---|---|---|
Thingiverse | Repository | Free | ★★★★★ | ★★★★ |
GrabCAD | Repository | Free | ★★★★★ | ★★★ |
Sketchfab | Repository | Free | ★★ | ★★★ |
CGTrader | Marketplace | Free, Paid | ★★★ | ★★★ |
MyMiniFactory | Marketplace | Free | ★★★ | ★★★ |
Yeggi | Search Engine | Free, Paid | n/a | ★★★ |
Free3D | Repository | Free, Paid | ★★ | ★★★ |
Pinshape | Marketplace | Free, Paid | ★★★ | ★★★ |
XYZprinting 3D Gallery | Marketplace | Free, Paid | ★★★ | ★★★ |
Dremel Lesson Plans | Repository | Free | ★★ | ★★★ |
YouMagine | Repository | Free | ★★★ | ★★★ |
Cults3D | Marketplace | Free, Paid | ★★ | ★★ |
Yobi3D | Search Engine | Free | n/a | ★★ |
3DExport | Marketplace | Free, Paid | ★★★ | ★★ |
Zortrax Library | Repository | Free | ★★ | ★★ |
STLFinder | Search Engine | Free, Paid | n/a | ★★ |
Rinkak | Marketplace | Free, Paid | ★★ | ★★ |
3DKitBash | Marketplace | Free, Paid | ★★ | ★★ |
3DShook | Subscription Service | Free, Paid | ★★ | ★★ |
RascomRas | Repository | Free | ★ | ★★ |
Threeding | Marketplace | Free, Paid | ★★ | ★★ |
Repables | Repository | Free | ★ | ★★ |
Libre3D | Repository | Free | ★ | ★ |
3Dagogo | Marketplace | Free, Paid | ★ | ★ |
Shapetizer | Marketplace | Free, Paid | ★ | ★ |
The Forge | Repository | Free | ★★ | ★ |
Fab365 | Marketplace | Free, Paid | ★ | ★ |
Redpah | Marketplace | Free, Paid | ★★ | ★ |
Polar Cloud | Repository | Free | ★★ | ★★ |
3D Warehouse | Repository | Free | ★ | ★★★★ |
STLHive | ShopFree, Paid | Free, Paid | ★ | ★ |
Shapeking | Repository | Free | n/a | ★ |
NASA | Repository | Free | ★ | ★★★★ |
NIH 3D Print Exchange | Repository | Free | ★★★★★ | ★★★★ |
Instructables | Repository | Free | ★★ | ★★★★★ |