TechDraw GeometricHatch

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TechDraw GeometricHatch.svg TechDraw GeometricHatch

Menu location
TechDraw → Apply Geometric Hatch to Face
Default shortcut
Introduced in version
See also
TechDraw Hatch Face using Image File, TechDraw Hatching


The GeometricHatch tool fills a closed region in a View with a pattern based on an AutoDesk PAT hatching specification. Alternatively, the Hatch tool uses an SVG or bitmap file as hatch pattern, see Hatching for details.

TechDraw GeomHatch example.png

Geometric hatch pattern on a face


  1. Select an closed region in a View.
  2. Press the TechDraw GeometricHatch.svg Apply Geometric Hatch to Face button
  3. A dialog will open where you can select your pattern, the scale, line weight and color.


  • Hatching objects are vulnerable to "topological naming" issues. See the information in the TechDraw Dimension Length.png TechDraw Dimension Length tool for more information. It is recommended that hatching be one of the last steps in your drawing process.

A small set of sample patterns are available in:


$INSTALL_DIR is the directory where FreeCAD was installed, for example



  • DataSource: The View and Face to receive the hatch pattern.
  • DataFile Pattern: The location of the PAT file to use.
  • DataName Pattern: The name of the PAT specification within File Pattern.
  • DataScale Pattern: The scale to be applied to the pattern (must be > 0.0).
  • ViewWeight Pattern: The thickness of the pattern lines.
  • ViewColor Pattern: The color for the pattern lines.


See also: TechDraw API and FreeCAD Scripting Basics.

The GeometricHatch tool can be used in macros and from the Python console by using the following functions:

hatch = FreeCAD.ActiveDocument.addObject('TechDraw::DrawGeomHatch','GeomHatch')
hatch.Source = (view1,["Face0"])
hatch.FilePattern = "path/to/myPATfile.pat"
hatch.NamePattern = "Diamond"
rc = page.addView(hatch)