- CAD stands for computer aided design.
- CAD file format used by AutoCAD to draw 2D or 3D design.
- CAD files hold information for these images, as well as drafting information.
- 2D CAD files are refers to drawings, while 3D files are called models, parts, or assemblies.
Examples
Types of CAD file
DWF
- DWF stands for design web format
- It is a secure file format developed by autodesk for efficient distribution and communication of rich design data to anyone who needs to view, review, or print design files.
- These are highly compressed so they are smaller and faster to transmit than design files
DXF
- DXF stands for drawing exchange format.
- It is a CAD data file format developed by autodesk for enabling data exchange between AutoCAD and other programs.
- It is typically used with AutoCAD software.
- These are always without dimensions so that the reader or user needs to know the drawing unit or has to extract it from the textual comments in the sheets.
DGN
- DGN is used as extension (.dgn) for CAD file format supported by Bentley Systems Micro Station.
- DGN format is used in many large projects, including buildings, highways, bridges, process plants, shipbuilding.
- DGN files are used widely due to their open sourced and non-proprietary nature.
STL
- STL stands for stereo lithography.
- STL files describe the surface geometry of a three-dimensional object without any representation of color, texture or other common CAD model attributes.
- STL format represent both binary and ASCII, binary are more common.
- STL file describes a raw unstructured triangulated surface by the unit normal and vertices of the triangles using a three-dimensional Cartesian coordinate system.
- Coordinates must be positive numbers, there is no scale information, and the units are arbitrary.
My notes
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