Detach function allows splitting curves and surfaces at different U and U,V parameters.

Click on any iso parameter to create a locator. To create additional locator, click with SHIFT key pressed. Once the locator is created it can be located anywhere on the surface by dragging. By pressing ALT key while moving the locator, it can be snapped to mid parameters. By clicking + CTRL key the locator can be snapped to the iso-parameter curve. You can also snap the locator to an external geometry by pressing CTRL+ALT key. 


 


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