Save the file as WoodFloor.pat and put it where AutoCAD can find it. Look no further than our collection of free AutoCAD hatch patterns in 2D DWG format, featuring a range of wood textures. Here is the pattern file, and you will notice that at the end, instead of a blank line, one can put a line starting with a * and then one can put a credit for the creator. Download hatch patterns from third-party websites. Although, it is possible to: Access hatches from the Autodesk App Store. All the hatches available from Autodesk are already packaged within the installed software. One cannot have a completely random hatch pattern, but if the repeat spacing is large enough, the eye can get fooled. Adding supplementary hatch patterns supplied by Autodesk to use within an AutoCAD Product. It is based on a plank width of 150 drawing units, and lengths to suit your picture. I had a quiet afternoon so I wrote a pattern file for a Wood Flooring Hatch.