Click Chamfer
.
The Chamfer Definition dialog box appears. Default options
are Length1/Angle in the Mode box and Tangency
in the Propagation box.
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Select the edge as shown below.
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The command allows you to define the two types of behavior
modes. Select Length1/Length2.
Enter 10mm for Length 1 and 25mm for Length 2.
Select OK with Tangency propagation.
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