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mesh - Cutting a circular hole in a hollow cylinder without distorting the cylinder - Blender Stack Exchange
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mesh - Cutting a circular hole in a hollow cylinder without distorting the cylinder - Blender Stack Exchange
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Hard Surface Modeling Cylinder Holes | Blender Tutorial | Modeling Multiple Holes On Cylinder - YouTube
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mesh - How to generate a cylinder with a hole except by knife tool and Boolean methods - Blender Stack Exchange
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