ZBrush Decimation and Export

Question 1

What is the primary purpose of Decimation Master in ZBrush?

Accepted Answer

To reduce the polygon count of a high-poly ZBrush mesh while preserving visual detail for rendering or 3D printing

Answer

Decimation Master reduces a high-poly ZBrush mesh (often millions of polygons) to a much lower polygon count using optimized triangle reduction that preserves the visual surface detail, making it suitable for rendering, 3D printing, or import into DCC applications.

Question 2

What does the 'Preprocess Current' button in Decimation Master do?

Accepted Answer

Analyzes the active SubTool's surface to calculate optimal decimation weights for a subsequent Decimate Current operation

Answer

Preprocess Current analyzes the active SubTool's surface detail and stores an internal curvature map that guides where triangles should be concentrated during the subsequent Decimate Current step.

Question 3

What is the difference between OBJ and GoZ export in ZBrush?

Accepted Answer

OBJ exports only the active SubTool; GoZ exports all visible SubTools simultaneously with topology, UVs, maps, and a direct bridge to the target DCC

Answer

OBJ is a static geometry export of the active SubTool. GoZ is a live bridge that transfers all visible SubTools — with UVs, polypainting as texture maps, and displacement — directly into a supported DCC with two-way update capability.

Question 4

What file format should you choose when exporting a ZBrush sculpt for 3D printing that requires watertight geometry?

Accepted Answer

STL

Answer

STL (STereoLithography) is the standard file format for 3D printing, accepted by virtually all slicing software. ZBrush's export produces watertight STL files suitable for FDM and resin printing.

Question 5

How does ZBrush's Decimation Master differ from ZRemesher in its output and use case?

Accepted Answer

Decimation Master produces optimized triangles preserving visual detail; ZRemesher produces clean quad topology for animation and rigging

Answer

Decimation Master outputs optimized triangles that preserve visual appearance at minimum polygon count — ideal for rendering and 3D printing. ZRemesher outputs clean quad topology suitable for animation, rigging, and subdivision — ideal for production pipelines.

ZBrush Practice Test

ZBrush Practice Test

ZBrush Decimation and Export