Now you create a work plane and a 2D sketch that is used as the profile of a sweep feature. To create the sweep feature, use the circle as the profile and the 3D equation curve as the path.
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Start the work plane command. - Select the 3D equation curve you just created then select the start point of the curve. This creates a work plane perpendicular to the curve at the selected point.
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Create a new sketch on Work Plane1. -
Project the start point of the 3D equation curve. This is the same point you used to create the work plane. 
Create a circle. Use the projected point as the center point of the circle. -
Dimension the circle as 0.2 mm. 
Finish the sketch. - Turn off the visibility of Work Plane1.
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Start the Sweep command. The circle is automatically selected as the profile. - Select the 3D equation curve as the path.
- Change the operation to Cut.
- Click OK.
