The default command when creating a cube at the origin is the following:

bpy.ops.mesh.primitive_cube_add(view_align=False, enter_editmode=False, location=(0.0, 0.0, 0.0), rotation=(0, 0, 0), layers=(True, False, False, False, False, False, False, False, False, False, False, False, False, False, False, False, False, False, False, False))

since I am not bothered about rotations and layers I can keep only the location like so:

bpy.ops.mesh.primitive_cube_add(location=(0.0, 0.0, 0.0))

This creates a UNIT cube at the origin (0,0,0).

My question is: Is there a way to add the dimensions of the cube I want, within that line somehow?

I am not asking about using a scale command after creating it... but rather creating it in the desired size straight away...?

  • $\begingroup$ May I ask you a question as someone new to scripting? Why would you script out the addition of a small/large cube? Is it faster? Is it simply more fun to script? I can understand using scripting for more complex operations but just wondering why someone would type out all of that code for what seems like an otherwise quick operation? Add > S > (numerical value) John $\endgroup$ – John Nov 8 '19 at 21:35
  • $\begingroup$ @John You would use a script whenever you have to do something procedurally (model/build/representation), not when you are manually modelling something... then the shortcuts and UI are much more practical :) $\endgroup$ – G.Rassovsky Nov 11 '19 at 10:49

Yes, you can use radius

bpy.ops.mesh.primitive_cube_add(location=(0.0, 0.0, 0.0), radius=2)

See the documentation for more details.

radius in this case is the half of the cubes edge length, so

bpy.ops.mesh.primitive_cube_add(location=(0.0, 0.0, 0.0), radius=edgelen/2)

would build a cube with edge length of edgelen.

Answer uses the Python API of Blender 2.72

  • 1
    $\begingroup$ I get: TypeError: Converting py args to operator properties: : keyword "radius" unrecognized but I think this might be due to the fact that I am still using the 2.66 release. What I needed was a way of specifying exact dimensions, not a scale rate, but I guess this is still something. Thank you. $\endgroup$ – G.Rassovsky Oct 10 '14 at 13:38
  • $\begingroup$ So you want a cuboid instead of a cube? Yes my answer was for 2.72. $\endgroup$ – user2859 Oct 10 '14 at 13:41
  • $\begingroup$ Well the script I need would ultimately have to handle cuboids too, however in the general case it would just be cubes of different sizes, that I need to create. $\endgroup$ – G.Rassovsky Oct 10 '14 at 13:43
  • $\begingroup$ For a cube with specific edge length you would just need to devide by 2. radius=edgelen/2. $\endgroup$ – user2859 Oct 10 '14 at 13:50

In Blender 2.8 you must use size, the radius is not more a parameter :


If you try to use radius you will have:

TypeError: Converting py args to operator properties: : keyword "radius" unrecognized

More on the docs.


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