Unlike the options for dimensioning a 2D skew, the options for dimensioning a 3D skew are deliberately restricted. You can only specify skew component lengths. Other parameters, in particular the skew angles, are calculated and displayed automatically by the software.
Dimension a 3D Skew Using Skew Length and Axis Length
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Select a skew component.
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In the Properties window, type a value for the skew Length, and then press ENTER.
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Type values for any two of the Axis Length parameters, and then press ENTER.
The software calculates values for the remaining axis length and the skew angles and dimensions the 3D skew.
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For 3D skews, skew angles display only when Axis Order is set to Box.
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The software displays two skew angles: the flat angle (1) and the declination angle (2).
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By default, the software displays the value of the flat angle in green and the value of the declination angle in black.
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If you change any Axis Length value, the software automatically recalculates the skew angle values.
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You can also set the length of each skew component individually. Right-click a skew component, and then click Set Length. Type a value in the Set Skew Axis Length dialog box, and then click OK.
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Skew angles cannot be user-defined.
Dimension a 3D Skew Using Axis Length
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Select a skew component.
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In the Properties window, type a value for each Axis Length, and then press ENTER. For example, type 3m, 12m, and 13m to define the length of each skew axis.
The software calculates the remaining parameter values and dimensions the 3D skew.