Reference Curve Requirements for Curve-Driven Tangent Drafts
To create a curve-driven tangent draft, you must first create a reference curve. You can create a reference curve as a sketched curve, a parting curve, or a silhouette curve with an offset. The reference curve must:
• Be continuous, tangent, and nonintersecting.
• Lie outside the reference part and be visible along the pull direction from both sides of the part.
• Lie on the parting surface when creating a solid one-sided draft.
The following example shows the correct placement of the reference curve.
1. Reference part (side view)
2. Reference curve (viewed on end)
3. Pull Direction
The next example shows an incorrect placement of the reference curve, because if you look from the bottom of the part along the pull direction, the reference curve is obscured by the part geometry.
1. Reference part (side view)
2. Reference curve (viewed on end)
3. Pull Direction
