Software fills in the hole in the center of item

Software Creality Print V5 and Beyond
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1

I’m using Creality Print 6.2.1. When I download the part in image 1, it gives me an error. When I fix it, it fills in the hole.

creality_1
creality_11221×769 98.3 KB

creality_2
creality_2903×685 79.4 KB

Don’t know how to fix it.
BMW_Cup_Holder_Insert2-FlangeTop.3mf (3.2 MB)

1 Like
2

" Objects isnt manifold " means it has something like a gap , hole or overlapping triangles in the mesh etc, youll need to go into another program like blender to fix it, or maybe you can fix the filled in hole by drilling it out again in creality print once creality print has filled it in https://www.google.com/url?sa=t&source=web&rct=j&opi=89978449&url=https://www.youtube.com/watch%3Fv%3Db9dIDkIwlg4%26t%3D58&ved=2ahUKEwjp2KWjnIePAxUTxzgGHdYYImMQma4LegQICxAC&usg=AOvVaw2JeFndwXc_NAYzmHxVpmt4 havent tried it myself