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178 lines
708 KiB
Markdown
178 lines
708 KiB
Markdown
---
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title: "shell"
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excerpt: "Remove volume from a 3-dimensional shape such that a wall of the provided thickness remains, taking volume starting at the provided face, leaving it open in that direction."
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layout: manual
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---
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Remove volume from a 3-dimensional shape such that a wall of the provided thickness remains, taking volume starting at the provided face, leaving it open in that direction.
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```js
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shell(
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solids: [Solid],
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thickness: number,
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faces: [FaceTag],
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): [Solid]
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```
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### Arguments
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| Name | Type | Description | Required |
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|----------|------|-------------|----------|
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| `solids` | [`[Solid]`](/docs/kcl/types/Solid) | Which solid (or solids) to shell out | Yes |
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| `thickness` | [`number`](/docs/kcl/types/number) | The thickness of the shell | Yes |
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| `faces` | [`[FaceTag]`](/docs/kcl/types/FaceTag) | The faces you want removed | Yes |
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### Returns
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[`[Solid]`](/docs/kcl/types/Solid)
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### Examples
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```js
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// Remove the end face for the extrusion.
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firstSketch = startSketchOn(XY)
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|> startProfile(at = [-12, 12])
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|> line(end = [24, 0])
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|> line(end = [0, -24])
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|> line(end = [-24, 0])
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|> close()
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|> extrude(length = 6)
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// Remove the end face for the extrusion.
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shell(firstSketch, faces = [END], thickness = 0.25)
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```
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```js
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// Remove the start face for the extrusion.
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firstSketch = startSketchOn(-XZ)
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|> startProfile(at = [-12, 12])
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|> line(end = [24, 0])
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|> line(end = [0, -24])
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|> line(end = [-24, 0])
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|> close()
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|> extrude(length = 6)
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// Remove the start face for the extrusion.
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shell(firstSketch, faces = [START], thickness = 0.25)
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```
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```js
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// Remove a tagged face and the end face for the extrusion.
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firstSketch = startSketchOn(XY)
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|> startProfile(at = [-12, 12])
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|> line(end = [24, 0])
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|> line(end = [0, -24])
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|> line(end = [-24, 0], tag = $myTag)
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|> close()
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|> extrude(length = 6)
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// Remove a tagged face for the extrusion.
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shell(firstSketch, faces = [myTag], thickness = 0.25)
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```
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```js
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// Remove multiple faces at once.
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firstSketch = startSketchOn(XY)
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|> startProfile(at = [-12, 12])
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|> line(end = [24, 0])
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|> line(end = [0, -24])
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|> line(end = [-24, 0], tag = $myTag)
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|> close()
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|> extrude(length = 6)
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// Remove a tagged face and the end face for the extrusion.
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shell(firstSketch, faces = [myTag, END], thickness = 0.25)
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```
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```js
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// Shell a sketch on face.
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size = 100
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case = startSketchOn(-XZ)
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|> startProfile(at = [-size, -size])
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|> line(end = [2 * size, 0])
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|> line(end = [0, 2 * size])
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|> tangentialArc(endAbsolute = [-size, size])
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|> close()
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|> extrude(length = 65)
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thing1 = startSketchOn(case, face = END)
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|> circle(center = [-size / 2, -size / 2], radius = 25)
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|> extrude(length = 50)
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thing2 = startSketchOn(case, face = END)
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|> circle(center = [size / 2, -size / 2], radius = 25)
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|> extrude(length = 50)
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// We put "case" in the shell function to shell the entire object.
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shell(case, faces = [START], thickness = 5)
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```
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```js
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// Shell a sketch on face object on the end face.
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size = 100
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case = startSketchOn(XY)
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|> startProfile(at = [-size, -size])
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|> line(end = [2 * size, 0])
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|> line(end = [0, 2 * size])
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|> tangentialArc(endAbsolute = [-size, size])
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|> close()
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|> extrude(length = 65)
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thing1 = startSketchOn(case, face = END)
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|> circle(center = [-size / 2, -size / 2], radius = 25)
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|> extrude(length = 50)
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thing2 = startSketchOn(case, face = END)
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|> circle(center = [size / 2, -size / 2], radius = 25)
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|> extrude(length = 50)
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// We put "thing1" in the shell function to shell the end face of the object.
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shell(thing1, faces = [END], thickness = 5)
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```
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```js
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// Shell sketched on face objects on the end face, include all sketches to shell
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// the entire object.
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size = 100
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case = startSketchOn(XY)
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|> startProfile(at = [-size, -size])
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|> line(end = [2 * size, 0])
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|> line(end = [0, 2 * size])
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|> tangentialArc(endAbsolute = [-size, size])
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|> close()
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|> extrude(length = 65)
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thing1 = startSketchOn(case, face = END)
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|> circle(center = [-size / 2, -size / 2], radius = 25)
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|> extrude(length = 50)
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thing2 = startSketchOn(case, face = END)
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|> circle(center = [size / 2, -size / 2], radius = 25)
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|> extrude(length = 50)
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// We put "thing1" and "thing2" in the shell function to shell the end face of the object.
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shell([thing1, thing2], faces = [END], thickness = 5)
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```
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