Monday, November 11, 2013

Exporting an STL from Matlab

In this tutorial, you will learn a simple way to export a 3D image as an STL by using Matlab. The functions you'll need to make the STL file in Matlab can be found in the 1st and 2nd link below, while a more in depth tutorial can be found in the 3rd link.


Okay: so let's get to it.

1. Save the above two functions into Matlab.

2. Make a 3D surface plot in Matlab.
For example, type in:
    >>  [X,Y] = meshgrid(-8,0.1:8); 
    >>  R = sqrt(X.^2+Y.^2) + eps;
    >>  Z = sin(R)./R;                  
    >>  surf(X,Y,Z)                      

3. Use the surf2solid function which you downloaded earlier:
    >> VariableName = surf2solid(X,Y,Z);

4. Use the stlwrite function that you downloaded:
    >> stlwrite('FileName.stl',VariableName)  
*FileName is to be replaced with what you want to name your file

And there you have it, a nice simple way of exporting a 3D file from Matlab. 


  1. Hi,

    It showed an error stating Z should be a matrix not a vector/scalar quantity

  2. Theres an error in code should be -
    >> [X,Y] = meshgrid(-8:0.1:8);
    >> R = sqrt(X.^2+Y.^2) + eps;
    >> Z = sin(R)./R;
    >> surf(X,Y,Z)

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