Rhino Office Chair Tutorial

There are mainly two methods for drawing an office chair in Rhino: using coordinate input to draw space curves and creative chair modeling techniques. You can choose according to your needs.

Drawing Chair Space Curves Using Coordinate Input

This method is suitable for situations where precise control over the position and shape of each part of the chair is required. Taking Rhino 6.0 as an example, the specific operation steps are as follows:

• Initial Setup: Open the Rhino software and make some necessary settings, such as displaying the axes so that you can clearly see the direction of the coordinate axes during the drawing process; turning off the grid lines to avoid interference while drawing; and enabling modeling aids to facilitate subsequent drawing operations.
• Drawing Curves: Select the polyline tool in the perspective view and input the starting point coordinates, for example, "0,0,0", which determines the starting position of the chair curve in space. Then, input the coordinates of subsequent points in sequence, such as "2,45,0" and "2,-41,0". By inputting these coordinate points, gradually outline the general shape of the chair curve. During the input process, you can also determine the perpendicular points by moving the cursor and inputting values to ensure the accuracy and smoothness of the curves. Finally, return to the origin to complete the drawing of the chair space curves.

Creative Chair Modeling Techniques (Non-Coordinate Method)

This method focuses more on creativity and surface operations and is suitable for situations where there are unique design requirements for the chair's shape. The steps are as follows:

• Drawing and Adjusting Circles: First, draw circles and adjust their shapes according to design requirements, such as changing the radius and center position of the circles. Then, copy multiple circles and adjust them to appropriate positions. These circles will serve as the basic elements for chair modeling.
• Curve and Surface Operations: Connect the curves between each circle to form an organic whole. Perform operations such as splitting and mirroring on the curves to further enrich the shape of the chair. Then, rebuild the curves to make them smoother and more regular. Use the two-rail sweep tool to create surfaces based on the curves, which is a key step in forming the solid shape of the chair.
• Completing the Model: Through lofting operations, connect and transition different surfaces to make the chair model more complete. Use XNurbs to blend the surfaces, further improving the quality and continuity of the surfaces. Finally, cut off the excess parts and make fine adjustments and optimizations to the chair model to meet the design requirements.