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I have a model which looks fine in Blender. In Lychee, however, parts are missing. I can only assume something is wrong with my stl export. I have recalculated the normals. Has anyone seen this before?

Lychee:

enter image description here

Blender:

enter image description here

Tony Ennis
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    even the blender's recalculate function isn't infallible esspecuially if there are duplicate vetexes and ripped edges. i would recommend doing a visual check of the face normals and merge by distance. – ruckus Jan 30 '23 at 01:14
  • Thanks, I have checked the dup vertices and merged them. What is a ripped edge? – Tony Ennis Jan 30 '23 at 01:53
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    A visual check of the normals you can do with the Face Orientation overlay (https://blender.stackexchange.com/a/216140/107598). When Lychee uses backface culling then the faces with the flipped normals (red) will not be displayed. – Blunder Jan 30 '23 at 01:56

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