To Create a Split Draft with Two Hinges
When you create a split draft with two hinges, each side of the draft surfaces rotates with respect to its own hinge. The sides can then be drafted either independently or dependently.
1. Click > 
Draft. The Draft tab opens.
Draft. The Draft tab opens.2. Select surfaces to draft from a single body or a single quilt.
3. Specify the first hinge. Click the 
Draft hinges collector on the Draft tab to activate it and select a plane, quilt, or curve chain located on the draft surfaces.
Draft hinges collector on the Draft tab to activate it and select a plane, quilt, or curve chain located on the draft surfaces.4. Specify the pull direction. The system displays the preview geometry for a constant draft with the default angle.
5. Open the Split tab and select Split by split object from the Split options menu. Select a quilt intersecting the draft surfaces as a split object. The system displays the preview geometry for a split draft with sides drafted independently, with the default draft angle for the second side. Both sides of the draft surfaces are rotated about the first hinge.
6. Specify the second hinge. Click the Draft hinges collector on the Draft tab to activate it, hold down the CTRL key, and select another plane, quilt, or curve chain. The preview geometry changes as the second side of drafted surfaces is rotated about the second hinge.
Draft hinges collector on the Draft tab to activate it, hold down the CTRL key, and select another plane, quilt, or curve chain. The preview geometry changes as the second side of drafted surfaces is rotated about the second hinge.7. Modify the draft angle values, as necessary. You can also select the Draft sides dependently option from the Side options menu, which becomes available after you specify the second hinge.
8. When satisfied with the feature geometry, click 
OK.
OK.