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When I model something in blender to be 3d-printed, I always get wrong dimensions in stl file, even though I've set scene units to metric, scale to 1 and in blender viewport, it shows the correct dimmensions. enter image description here


But when I convert and export the model to an stl file, dimensions get converted to millimeters, no matter the settings or model dimensions in blender. enter image description here


For exporting blender model to stl files, I am using a blender addon named '3D Print Toolbox'. At first, i thought I need to change some setting in the addon, but couldn't find anything to play around with.

enter image description here


My real problem/question is - Is there something that I am missing or doing wrong?

Perhaps some setting or step that I am overlooking before exporting.

PS: As a workaround, each time, I have to scale up the exported stl file model.

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  • $\begingroup$ I don't use tools like this, but do you apply the scale of the object after scaling or scale in edit mode? Judging by how blender works, this might be necessary. $\endgroup$ – TARDIS Maker Dec 4 '14 at 14:45
  • $\begingroup$ I've tried both the methods of scaling, but the result's the same. $\endgroup$ – zhirzh Dec 4 '14 at 14:49