Now if you open this file with notepad, it provides instruction in the header of the file on how to create your own custom hatch patterns. A file exists within the installation directory for the version of SOLIDWORKS you are using (C:\Program Files\SolidWorks Corp\SolidWorks\Lang\English) called “ sldwks.ptn” which is where the information for the available standard hatch patterns is stored and read from. To answer that question we have to know where the standard hatch patterns come from in the first place. SOLIDWORKS Hatch Pattern SOLIDWORKS Hatch Pattern File Location