Here’s a quick tip on how to locate your AutoCAD Hatch Patterns.
Your hatch standard pattern definitions are located within your acad.pat file. This file is usually located in program files under your program files\autocad-version\support folder.
If using AutoCAD LT you may find your Hatch Patterns are located in the UserDataCache folder. This is a hidden folder and cannot be seen without changing your settings.
To see your hidden folders and locate hatch patterns be sure to :
Open The Tools in Windows Explorer
1. Open Explorer window. (Rt Click Start Button – Lower Left and Choose Open Explorer)
2. Click on the Tools (ALT and ALT+T) Menu bar item. (See screenshot below)
3. Click on Folder Options.
4. Select Show Hidden Files And Folders And Drives
See also our AutoCAD Hatch Patterns listing