Once you have started the Lofted Surface command, you can proceed as follows (please note that you can follow this step-by-step example by loading file: "lofted_ruled.e3").
| 1 | To obtain an associative surface, that is an open solid — a Skin — retaining a link to its base curves, so that if you modify such curves the surface will be modified accordingly, check the Associative Mode box. See "
Associative Surfaces (Skins)" for details. |
| 2 | In the Select As drop-down list, select the
Grid option. |
| 3 | Select the boundary of the surface on the left: Then select the boundary of the surface on the right:  To change the selected boundaries (for example if you selected the wrong ones by mistake), right-click on Boundary Set A in the selection list, select Reset and perform selection again. As soon as the second boundary is selected, a preview is displayed:  Please note that if you select More Options, the Type drop-down list is set to Default, which is the default value. With the previous selection, the current surface type automatically determined is Ruled. |
| 4 | To remove the twist from the resulting surface, select the Invert check box: |
| 5 | Click  or  to confirm your selections and create the surface. Click  to discard your changes. |