To Twist Geometry
1. Click > 
Warp to open the Warp tab.
Warp to open the Warp tab.2. Select the geometry to twist.
3. Click 
Twist to display the twist settings and to display the twist marquee.
Twist to display the twist settings and to display the twist marquee.4. Click 
Next Axis until the axis aligns in the direction that you want to twist the geometry.
Next Axis until the axis aligns in the direction that you want to twist the geometry.5. If required, click 
Flip Direction to reverse the direction of the twist axis.
Flip Direction to reverse the direction of the twist axis.6. Type a value for the twist angle in the Angle box, or drag the twist handle. Optionally, click 
to export the parameter value to edit outside of Warp.
to export the parameter value to edit outside of Warp.7. To adjust the region of deformation, drag the faces of the marquee or click the Marquee tab and set the following options:
◦ References—Select optional references for the marquee.
◦ Active Axis—Type Start and End values to determine the size of the marquee. The range depends on the Marquee Size type that you selected. Optionally, click to export the parameter value to edit outside of Warp.
to export the parameter value to edit outside of Warp.◦ Marquee Size—Select a method of measurement to set the dimensions of the active axis.
 | When you choose an Absolute type for the marquee size and make use of optional references, you cannot change the marquee's length. To change the length, edit the referenced object outside of the Warp feature. |
8. Click Center Axis to keep the marquee centered on the axis of the optional reference.
9. Select any warp operation to complete the current warp operation or click 
OK to complete the Warp feature.
OK to complete the Warp feature.