Alibre Design

Chapter 7 - Feature Creation2. Select the Loft Boss tool or Loft Cut tool from the Part Modeling toolbar; or fromthe Feature menu, select Boss > Loft or Cut > Loft. The Loft Boss or the Loft Cut dialogbox appears.3. In the work area, select the sketches or faces to use in the loft. If you select inside the designexplorer, you must press Shift to select multiple sketches or faces. As you make the selections,the corresponding labels appear in the Cross Sections box.The sketches/faces must be listed in the order in which the loft will be created. To remove asketch or face from the box, select it from the list and press Delete on the keyboard.4. If desired, check the Specify Tangent box next to a sketch or face. When “Specify Tangent” isselected, local control of surface directions in the vicinity of the lofted sketches/faces ispossible. If “Tangency Angle” is 0 ˚, surface normals remain perpendicular to the sketch planenormal, or parallel to the adjoining face normals.5. If Specify Tangent is checked, Tangent Angles can be specified for sketches (but not faces).Specify the desired angle in the Tangent Angle field. In this case, the lofted surface tangentwould be at the angle specified with the sketch plane normal.6. If Specify Tangent is checked, additional control is obtained using the Tangent Magnitude foreach Cross Section. Tangent Magnitudes control the rate at which surfaces diverge from thecross section sketch planes or faces. As Tangent Magnitudes increase, surfaces diverge moreslowly from surface tangents at the sketch cross sections. Specify the desired value in theTangent Magnitude field. A value of 0 is equivalent to not using “Specify Tangent”.159