Free cad design software for windows

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System Requirements: Internet Browser

Alibre Design Xpress is a rich and capable 3D solid modeler for creating mechanical parts, assemblies and 2D drawings - and is free.
Certain more elegant features, like 3D sketching and part Booleans, can be found in the paid versions of the Alibre Design product family.
Alibre Design Xpress equips the person needing basic 3D design capabilities.
Easy to Use
The genius of Alibre Design Xpress lies in its inherent ease-of-use. Those that are new to 3D will find the tutorials, help and user interface intuitive to learning how to build 3D designs.
Those that have used 3D CAD previously will be delighted at the functionality and richness of features
Alibre Design Xpress has a rich set of integrated tutorials that you can use to learn the product quickly. These are the same tutorials included in paid versions of Alibre Design.
Furthermore, you can opt to attend online training classes a-la-carte or with a subscription. Or you may order a product or training manual for self-guided study.
Register your copy of Alibre Design Xpress to gain the ability to exchange data with other systems in formats such as STEP, IGES, and SAT.
Registered Alibre Design Xpress users may also create assemblies with up to ten unique parts -- twice as many as unregistered users.
Main features:
- Part Modeling - Intelligent sketching with automatic constraint capture (i.e., horizontal, vertical, perpendicular, etc.)
- Feature-based modeling with parametric history
- Powerful feature creation tools: sweeps, lofts, helix, holes, etc.
- Mirroring and pattern creation
- Assembly Modeling - Assembly constraints: mate, orient, align, etc. with auto-constrain mode
- Exploded views
- Interference checking, measurement tools, physical property calculator
- 2D Drawing and Detailing - Automated generation of 2D drawings of parts and assemblies
- Bi-directional associativity - change the model and the drawing updates and vice versa
- ISO and ANSI standard templates
- Orthographic views including front, top, right and iso with hidden line display
- GD&T symbols
- Redline markups
- Installation and startup assistance via telephone (972-671-8492, ext. 293) during the first 30 days
- Online help
- Integrated tutorials
- Alibre Design Xpress User Forum access
System requirements:
- No Internet connection is required to use Alibre Design;the design and data management functions can be used offline.
- An Internet connection is required to hold Team Design sessions, securely share data through the Repository and use the Alibre Assistant for support.
- Minimum: 56.6 kb
- Recommended: DSL, Cable Modem, T1 or faster
- Internet Explorer 4.01 SP2 or later1 (6.0 or later recommended)
- Microsoft Virtual Machine
- Microsoft DirectX 9.0c
- 800 MHz or faster processor
- 512 MB RAM
- 1024 x 768 screen resolution
- (800 x 600 for laptops)
- Video card with DirectX 9.0c support: 64 MB or higher
- 16-bit or high color
- 150 MB available hard disk
- 800 MB Virtual memory
- CD-ROM drive (to install from CD)
- Mouse or pointing device
System requirements:
- Intel Pentium or equivalent processor: 2 GHz or faster
- RAM: 1-2 GB
- 1024 x 786 minimum screen resolution
- (1280x1024 or greater recommended)
- 64 MB or higher video card with DirectX 9.0c
- Color: 16-bit or 32-bit
- 200 MB available hard disk space
- 1 GB Virtual memory
- CD-ROM drive
- Mouse or pointing device
- Internet Explorer 4.01 SP2 or later (6.0 or later recommended)
- Microsoft Virtual Machine (Microsoft VM)
- Microsoft DirectX 9.0c