# OBJ multicolor export non-manifold edges

**URL:** https://discourse.shapr3d.com/t/obj-multicolor-export-non-manifold-edges/40383
**Category:** Modeling Questions
**Created:** [February 24, 2026, 8:48pm UTC](https://discourse.shapr3d.com/t/obj-multicolor-export-non-manifold-edges/40383 "2026-02-24T20:48:06Z")
**Posts on this page:** 1
**Page:** 1

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### Author: ![DrKronos](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/drkronos/32/36064_2.png) [@DrKronos](https://discourse.shapr3d.com/u/DrKronos)
#### Post date: [February 24, 2026, 8:48pm UTC](https://discourse.shapr3d.com/t/obj-multicolor-export-non-manifold-edges/40383/1 "2026-02-24T20:48:06Z")

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I’m using shapr3d to model for 3d printing.

Due to Shapr not supporting multicolor 3mf file exports, I have to export as OBJ. However, it seems all my multicolor OBJ exports end up with a lot of non-manifold edges, and of course fixing them in the slicer will delete the polygon color assignments.

Is there a better way to export multicolor objects for 3d printing? Or how do I export them to OBJ without breaking them?