Models, Tools, and Documents

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3D Models and Tools

In ZBrush, 3D models and 2.5D / 2D brushes can be located in the same place: the Tool palette. 3D models are called Tools and Model's interchangably.

A 3D model can be called a Tool or a Model in ZBrush. In the interface, you will find them under the Tool palette.
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The 2.5D Document

The Document is the canvas you work in. Its is a combination of the viewport from a 3D modeler and a 2D image. You can sculpt a 3D model inside the canvas as well as sculpt and paint 2.5D Pixols. You can adjust the lights in it in the Light Palette and you can adjust the rendering settings in the Render Palette.

To learn more about Documents click here.

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2.5D Documents vs Tools

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The Difference

  • You paint a Document.
  • You sculpt or work with a Tool.
To save your Document,
Go to the Document palette and click Save As. ZBrush documents store depth, color, material, lighting and other setting with them. They do not store 3D information. If you are modeling an object in ZBrush and you save the Document, it will drop the model to canvas and save the document. It will, however, no longer be a 3D object.
To save your Tool
Go to the Tool palette and click Save As.
Documents are the depth-enabled canvas that you paint. Information saved with a document includes the image you've created plus any additional information (such as custom materials) needed to render that image. But basically, you can think of a document as an image. Documents are ZBrush's 'default' file type. When you do a simple save, you save a document, not a model.

Tools are brushes, built-in 3D shapes, custom models, and a few other special things such as blur tools. If you are a modeler, then the models you work with will be tools, and to load or save them you will need to use the load and save commands under the Tool palette menu, not under the Document palette menu.

Images can be exported into .tif or .psd format (and possibly other formats as well, depending on your particular version of ZBrush), and those image formats can also be opened. Resizing is done by setting the desired width and height and click the Resize button. If you do not want to constrain the proportions, unclick Pro.

Models can be exported as .OBJ and .DXF.

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