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In the process of 3D modeling and design, surface design is quite common. In general, surfaces can be adjusted by controlling the curve points; therefore, curve editing is one of the essential operations in the process of surface design. So, in the upcoming 3D software tutorial, I will introduce to you the tips for using the curve editing functions in HaoChen 3D software! The steps for editing curves in the HaoChen 3D software are as follows: When moving control points or edit points in HaoChen 3D, the curve is automatically updated ； All surfaces that use this curve as one of their defining entities will be dynamically updated. As shown in the figure below: when changing edit points and control vertices, the “Curve” command bar allows control over how the shape of the curve changes. These options are available only in the edit contour mode. As shown in the figure below: when the shape editing button is selected, moving a point on the curve affects the shape of the entire curve. As shown in the figure below: when the local edit button is selected, it affects the shape of the curve around the editing point. As shown in the figure below: In flexible mode, external relationships can be used to control the curve shape, and the curve shape will automatically update when the dimensions are changed. As shown in the figure below: in rigid mode, external relationships cannot be used to control the curve shape. Instead, the shape of the curve remains unchanged, while the curve simply rotates. As shown in the figure below: This tutorial provides a brief introduction to the use of curve editing functions in the HaoChen 3D software in the process of 3D modeling and design. Have you learned it? Those who are interested can visit the official HaoChen CAD website’s download section to freely download and install HaoChen 3D software, so as to learn together with the author~ Want more 3D/CAD tutorials? So follow me quickly!