Free Parts Library
3D parts and 2D drawings shared by people using the Innerscene 3D Viewer, free to open, download and reuse. Everything is public domain (CC0).
3D Parts Library
10381 parts · STEP, STL, SketchUp, 3MF, OBJ, glTF, IFC, Rhino and more
Mechanical parts, hardware, enclosures, furniture and props shared by people using the Innerscene 3D Viewer. Click any part to rotate it in 3D in your browser, then download it. Everything is public domain: use it in prints, products and projects without asking.
Browse 3D parts →Drawing Library
1814 drawings · DWG, DXF, PDF, SVG, DWF and more
DWG and DXF blocks, plan symbols, floor plans, construction details and PDF drawing sets shared by people using the Innerscene viewer. Open any drawing in your browser to zoom and measure, then download it. Everything is public domain.
Browse drawings →Video tutorial
Free CAD Blocks and 3D Models for Architects and Designers (DWG, DXF, FBX, Revit IFC)
Create a Model with AI
Can’t find the part you need? Describe it, or add a photo, and AI builds a 3D model in the 3D viewer at real size. Refine it by asking for changes, then export it to STEP, STL, DWG, FBX or another format. It runs on your own Anthropic or OpenAI API key; see how to get a key and what it costs.
Create a model with AIThe AI Generator also makes jewelry, people, DWG floor plans, molecules and laser cut files.
Contribute
Upload models and drawings (or a zip of them) and describe each one. The viewer sorts each file into the 3D or the drawing library. Everything is reviewed before it appears, released under CC0, and kept for 1 to 5 years depending on file size. See the library terms.
Contribute parts & drawingsParts here are contributed by their authors or come from public-domain collections. If you believe a file infringes your rights, use Report on its viewer page or see our copyright policy.