Hatch Desk Build repeating CAD hatch patterns
Pattern editor PAT source + New pattern Import .PAT Open .PAT Restore samples ↶ Undo ↷ Redo Export pattern Export library Quick guide Backup / restore…
One named pattern per exported .PAT file. Hatch scale and hatch angle are preview settings; use Scale geometry or Rotate geometry to bake a change into the file.
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Using Hatch Desk × Select Ground, Concrete, Marsh, or another sample, or create a New pattern. Edit line families or Draw repeating tile. Lines snap to the tile grid; dots repeat with the tile. Export pattern downloads one named PAT. Export library packages separate PAT files in a ZIP. Preview versus definition Zoom, hatch scale, angle, and boundary change the preview. Scale geometry and Rotate geometry change the exported PAT definition.
Save and resume Complete edits save in this browser when storage is available. Backup / restore saves a portable JSON backup, including unfinished definitions. Apply drawn tile strokes before backing up. Open replaces after confirmation; Import merges with a choice for matching names.
AutoCAD Extract PAT files to a dedicated support folder. Each filename must match its pattern name. Set hatch scale for your drawing units. Test a representative area before a large fill.
Pattern limits Straight segments and dots only; up to 128 line families per pattern. PAT values round to six decimal places. Dense previews stop at a work limit and report truncation.
What stays here / what leaves Your files are processed in this browser. Imports do not upload them. Save and Export write local files or start downloads. Cookieless page-view analytics go to Cloudflare and do not include file contents or names. Report bug opens the site's report form; only submitting that form sends its contents.
Matching pattern names Choose how to handle these imported patterns.
Cancel Skip matches Keep both Replace matches
Draw a repeating tile Draw straight segments on the grid. The tile repeats in both directions. Applying it replaces this pattern's line families; Undo can restore them.
Tile size Line Dot Erase Undo stroke Clear tile
Cancel Apply tile
Backup / restore Save a JSON backup of all patterns, including unfinished edits. Restoring a backup replaces the current library after confirmation. PAT exports are ready for AutoCAD.
Cancel Restore backup… Save backup
Build, preview, export Select a sample or create a new pattern. Edit line families, or draw your own repeating tile. Preview scale and angle simulate AutoCAD's hatch settings. Geometry scale/rotation changes are saved in the PAT definition. Export pattern produces PATTERN_NAME.pat. Export library produces a ZIP with one PAT per pattern. Extract to a dedicated folder and add it to AutoCAD's Support File Search Path. Select the pattern in Hatch, then set its scale for your drawing units. Import merges files with explicit duplicate handling. Open replaces the library after confirmation. No source file is overwritten. Drafts save in this browser when storage is available. Use Backup / restore for a portable JSON backup. Dense previews stop at a work limit instead of freezing. Got it