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I'm trying to connect two shapes in blender but whenever I try to connect the vertices, whether it's through merging them individually (alt + m), using the bridge tool, or through Remove Doubles (now called Merge by Distance), the vertices behave as if they aren't being affected by the subsurf modifier. Here's the shape without the modifier on: Model without subsurf

And here it is with the modifier on: enter image description here

Turning the modifier off or removing it, merging the vertices, then adding the modifier back still causes the same error. I assume this is a bug but I want to know if there's something I'm missing. In the meantime I suppose I'll have to model the entire shape as one piece.

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  • $\begingroup$ Can you upload the .blend file (blend-exchange.giantcowfilms.com)? I suspect there are still duplicate vertices / edge loops hiding there or an internal face. $\endgroup$ – Robert Gützkow Aug 4 at 21:18
  • $\begingroup$ I went ahead and modeled the base as one solid shape but I'll see if I can replicate the error in a new file. $\endgroup$ – NdieCIty Aug 4 at 21:59
  • $\begingroup$ Here's the mockup I made. $\endgroup$ – NdieCIty Aug 4 at 22:19
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The normals were flipped. Recalculating the normals using SHIFT+N fixes it.

Before

Before

After

After

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  • $\begingroup$ That worked, thanks! Now I'm wondering how the normals got flipped to begin with. $\endgroup$ – NdieCIty Aug 4 at 22:56
  • $\begingroup$ @NdieCIty, did you make half and then duplicate and scale by -1? that will do it. $\endgroup$ – sambler Aug 8 at 10:48

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