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Autodesk Mechanical Desktop 2009 is a feature-rich CAD software that still holds value for specific users. While it's no longer supported by Autodesk, you can try obtaining the software through third-party sources or online marketplaces. Be sure to verify the software's authenticity and ensure your system meets the minimum requirements before installation. If you're looking for newer alternatives, consider exploring Autodesk's current product lineup, such as Autodesk Inventor or Autodesk Fusion 360.