Snapping With Instant3D When you drag the handle, you can snap to a face or vertex to set the modified feature size. To snap to a face: Select a face and drag the handle. Press and hold the Alt key, then move the pointer over the face to which to snap. A dashed line connects the dragged face to the face you are snapping to. Release the mouse button.Video: Snapping to a Face with Instant3D Parent topicCreating Features in Instant3D Instant3D Sketch Selection and Existing Geometry Creating Features Using the Midplane Features Supported by Instant3D