# Flat pattern for sheet metal

**URL:** <https://discourse.mcneel.com/t/flat-pattern-for-sheet-metal/203482>\
**Category:** Rhino\
**Tags:** windows\
**Created:** [April 23, 2025, 2:33pm UTC](https://discourse.mcneel.com/t/flat-pattern-for-sheet-metal/203482 "2025-04-23T14:33:19Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Raul\_Leon](https://sea3.discourse-cdn.com/mcneel/user_avatar/discourse.mcneel.com/raul_leon/32/641574_2.png) [@Raul\_Leon](https://discourse.mcneel.com/u/Raul_Leon)\
**Post date:** [April 23, 2025, 2:33pm UTC](https://discourse.mcneel.com/t/flat-pattern-for-sheet-metal/203482/1 "2025-04-23T14:33:19Z")

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I’m looking for a way to create a flat pattern for a sheet metal duct that I need manufactured. I currently have it as a joined surface (basically the rect ducting with a flange for mounting). I tried the unroll but it gives me each individual surface instead of a complete sheet. Attached is the file. Any help would be appreciated  
[FLG-240712.stp](https://discourse.mcneel.com/uploads/short-url/vy4x0lWIfV5cOEaAaFyYTKwFxCD.stp) (22.6 KB)

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**Author:** ![Gijs](https://sea3.discourse-cdn.com/mcneel/user_avatar/discourse.mcneel.com/gijs/32/769882_2.png) [@Gijs](https://discourse.mcneel.com/u/Gijs)\
**Post date:** [April 23, 2025, 3:03pm UTC](https://discourse.mcneel.com/t/flat-pattern-for-sheet-metal/203482/2 "2025-04-23T15:03:17Z")

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![image](https://global.discourse-cdn.com/mcneel/uploads/default/original/4X/f/e/1/fe12cf4a97c6ab2f706e89d2979fcf8c8ef1413b.png)

then use the Explode=no option when Unrolling