How to fix Ugly Lines caused by Subdivision Glitches

Have you ever gotten that weird glitch after applying smoothing and subdivision surface on your mesh where dark, irremovable lines suddenly appear and run down the length of your object?  There is an easy way to fix it!

2 thoughts on “How to fix Ugly Lines caused by Subdivision Glitches

  1. Note that in newer versions of Blender, the recalculate button is under the shading/UVs tab, and isn’t immediately obvious. You can still use the same shortcut I mentioned in the video to fix the mesh, though.
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