📍 Part of our comprehensive guide: Ultimate List of 3D Model Sites
Thangs and Yeggi are the premier search engines of the 3D printing and digital asset universe. While Yeggi acts as the universal keyword aggregator indexing over 4.5 million 3D models across the web, Thangs revolutionizes the space with proprietary 3D Geometric AI Search (searching by 3D shape rather than text) and automated Git-like revision control for collaborative engineering teams.
⚡ Platform At a Glance
How 3D Search Engines Solve the Fragmented Web
With hundreds of separate repositories across the internet, finding a specific replacement gear or stylized miniature used to require searching a dozen websites individually. **Yeggi** established itself as the ‘Google for 3D Models’, aggregating real-time keyword search results from Thingiverse, Printables, Cults3D, MyMiniFactory, CGTrader, and dozens more.
**Thangs** took search technology a quantum leap forward by introducing **Geometric AI Search**. Instead of relying on tags or descriptions, Thangs analyzes the actual polygonal topology and geometric curvature of 3D meshes.
Searching by 3D Shape & Mechanical Compatibility
On Thangs, users can upload an existing 3D file or partial scan, and the AI algorithm instantly identifies identical models, remixes, and mechanically compatible mating parts across millions of indexed assets.
Engineers can search for parts that fit specific bolt patterns, pipe diameters, or interlocking brackets without knowing what the original creator named the file.
Thangs Workspace: Git for 3D CAD Collaboration
Beyond search, Thangs provides **Thangs Workspace**—a cloud collaboration tool that brings software engineering version control to 3D design. Teams can view visual 3D diffs (highlighting exactly which vertices or dimensions changed between revisions in red and green), leave spatial comments on assemblies, and manage multi-part BOM hierarchies.
Supported Formats & Software Compatibility
| Format | Target Software / Engine | Best Application |
|---|---|---|
| .STL / .3MF | All Slicers & 3D Printers | Universal search indexing and real-time WebGL previews |
| .STEP / .STP | CAD Engineering Packages | Deep geometric feature recognition and volumetric comparison |
| .OBJ / .FBX | Blender, Maya, Game Engines | Universal polygon mesh indexing |
| .SLDPRT / .F3D | SolidWorks, Fusion 360 | Native proprietary CAD format preview and version control |
⚖️ Licensing, Copyright & Legal Protection
As search engines, Thangs and Yeggi index models from across the web. The original licensing terms (Creative Commons, Royalty-Free, Commercial) from the host platform apply to each indexed model and are clearly displayed on the search result card.
💰 Pricing & Creator Royalty Structure
100% Free search access for all users. Thangs Membership tiers ($5-$10/mo) allow creators to sell subscription model clubs directly to fans.
Pros & Cons Summary
✅ Strengths
- Geometric AI Search: Find models by uploading a 3D shape or CAD file.
- Yeggi searches 4.5M+ models across 30+ repositories in a single query.
- Visual 3D version control highlights design revisions and dimension changes.
- Eliminates hours of manual browsing across multiple disconnected websites.
⚠️ Considerations
- Yeggi interface contains standard search advertising displays.
- Geometric search algorithm requires clean boundary geometry for complex assemblies.
Frequently Asked Questions
How does Geometric Search on Thangs work?
You click the camera/upload icon on Thangs and drop in any 3D file (STL, OBJ, STEP). The AI compares the physical geometry and curvature against millions of indexed models to find identical shapes, remixes, or mating components.
What is the difference between Thangs and Yeggi?
Yeggi is a pure keyword search aggregator indexing links across 30+ external sites. Thangs is both a standalone 3D community host, a geometric AI search engine, and a collaborative version control tool for 3D designers.
Can I use Thangs to back up and version control my team’s CAD files?
Yes! Thangs Workspace allows teams to upload SolidWorks, Fusion 360, STEP, and Blender files with automated version history, spatial commenting, and visual 3D diff tracking.
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