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Blender 3D Printing Essentials by Gordon C. Fisher

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Setting up the units of the scene

Metric units are the default standard of measurement in 3D printing. To set up Blender for Metric scaling, navigate to the Blender Properties panel and select the button with the lamp, sphere, and cylinder icon from the header as seen in the following screenshot. Then, scroll down until you see the Units subpanel. Select the Metric button, and then set the Scale option to 0.001 (thousandths of a meter, or a millimeter). Millimeters will be the scale we are using.

Setting up the units of the scene

There is a reason for this. If you make something very tiny, like a detailed HO scale train body and you use meters as your unit, you will be more likely ...

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