Revit has Two types of Fill Patterns: Drafting & Model. Like AutoCAD, Revit too has same method of Definition to create Patterns, hence the Revit Fill Patterns can be found in Program files/Autodesk/ Revit Architecture 2014/ Data.. which has both Metric & Imperial Revit.Pat files.
If we want a Model Pattern to be available as Drafting Pattern, typically in some cases like CutPattern does not allow model patterns, its disabled as shown below: Then follow this procedure to create a new Drafting Pattern that has the same fill pattern as the Model one.
In this Example I will take Brick Pattern available in Model but not as Drafting.
1. Open the Revit.Pat file or Revit Metric.Pat file based on the units you are working.
3. Change ;%TYPE=MODEL TO ;%TYPE=DRAFTING
5. Now open Revit … Manage… Additional Settings….Fill pattern…Select Drafting pattern….New…..choose custom…import….select the Brick.Pat file….set the import scale till you see a preview correctly…once imported this cannot be changed, you can only re import & change.
6. This will henceforth be a drafting pattern that can be selected as cutpattern in material Library.
Note: Type=Model or Drafting in the definition defines the type of Pattern.