Free hatch patterns from AIBIMTool
https://aibimtool.com/hatch-patterns

License: CC0 1.0. Use, change and share them in any project, paid work included. No credit needed.

metric/    every pattern in millimetres (;%UNITS=MM), one pattern per file
imperial/  the same patterns in inches (;%UNITS=INCH), one pattern per file
all-metric.pat, all-imperial.pat  every pattern in one file, handy for Revit's import dialog

AutoCAD and AutoCAD LT
  1. Copy the .pat files you want into a folder, e.g. C:\CAD\Hatch.
  2. OPTIONS > Files > Support File Search Path > Add, browse to that folder, OK.
  3. HATCH > Pattern panel: the patterns are listed under Custom (restart AutoCAD if not).
  Keep each file's name equal to the pattern name inside it (BRICK-RUNNING-US.pat holds
  *BRICK-RUNNING-US); AutoCAD only finds a custom pattern that way.
  Model patterns are drawn at real size: in a drawing in millimetres use metric/ at scale 1,
  in a drawing in inches use imperial/ at scale 1. Drafting patterns are sized for paper:
  set the hatch scale to the drawing scale factor (50 for 1:50, 48 for 1/4" = 1'-0").

Revit and Revit LT
  Manage > Additional Settings > Fill Patterns > New > Custom > Import, pick a file,
  choose the same type the pattern is marked with (Model or Drafting), import scale 1.
  Every pattern says which it is on its ;%TYPE line and on the website.

Bluebeam Revu
  Properties toolbar > Hatch > Manage > select a set > Modify > Import AutoCAD Pattern.
