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How to open a file with .3dx extension?
File type: Rhino 3D Model File (Robert McNeel & Associates)
Compatible with Windows 10, 8.1, 8, 7, Vista and XP
Searching for the right program to open .3dx files?

"You'll need a new app to open this file" is probably the most common error faced by millions of Windows users every day. This is either because the program required to open a file is not available on your system or there may be other issues.
What is .3dx file extension?

Three-dimensional model created with the Rhino (Rhinoceros) 3D modeling program; uses NURBS (Non-Uniform Rational B-Splines) to represent 3D geometry.

Windows Desktop Software that can be used to open .3dx files:
Rhino 3D.