In Siemens nx, shell command use to modify a solid body by applying wall thickness and opening selected faces. You can also assign individual thickness to face or remove individual faces.
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Where do i find it?
From menu: insert -> offset / scale -> shell.
From home tab -> Feature group -> Shell.
How to use shell command.
1. From menu -> insert -> offset/scale -> shell.
2. In the shell dialog box, from type list, you can select remove faces then shell or shell all faces.
In this example, i will select remove faces, then shell.
3. In the face to pierce, select face to pierce.
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4. In the thickness group, you can input value in the thickness box or drag thickness handle.
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5. Click OK or apply to complete.
You can see this video below for more detail.
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