Office Chair Modeling Skills

Office chair modeling requires mastering skills such as clarifying the purpose, reasonably splitting components, making good preliminary preparations, and using the symmetry modifier. Details are as follows:

Clarify the modeling purpose: The purposes of office chair modeling mainly fall into three categories. First, for e-commerce product images, the model should closely resemble the real object, and the materials should accurately present different textures such as mesh fabric, leather, plastic, and metal to attract consumers. Second, for interior scene matching, the chair does not need to be overly detailed, but the number of faces should be strictly controlled because dozens of chairs may appear in the scene simultaneously, and too many faces will affect rendering efficiency. Third, for animations or product demonstrations, the model should have component-splitting functions, and some structures should be able to rotate or move to showcase product features. Different purposes have significantly different requirements for model accuracy. Clarifying the output goal before modeling can avoid repeated rework in the later stages.

Reasonably split components: When building an office chair model, do not directly stretch from an overall box. Instead, split the chair into multiple components, such as the backrest, seat cushion, armrests, and chair legs. Model each component separately and then combine them through methods such as symmetry, attachment, and alignment. This approach allows for fine control over the details of each part and facilitates later material modifications and animation production. For example, when modifying the material of the armrests, you only need to operate on the armrest component without affecting other parts.

Make good preliminary preparations for modeling:

• Confirm the system units: In 3Ds Max, open 'Customize' -> 'Units Setup' through the top menu and set both 'Display Unit Scale' and 'System Unit Scale' to 'Millimeters'. The real dimensions of ergonomic chairs usually fall within the range of 'backrest height from 550mm to 650mm, seat cushion depth from 480mm to 520mm, and armrest height from 220mm to 260mm'. Modeling should be carried out within the correct proportional framework.
• Arrange the three-view reference images properly: Create a plane object in the viewport with the same length and width as the actual size of the reference image. Drag the reference image into the material editor and assign it as a diffuse map to the plane, or use it as an environment background image. It is recommended to use the 'side view as the main reference and the front view as the auxiliary reference'. Since most office chairs have a symmetrical structure, after building one side, use the 'Symmetry' modifier to complete the other half, which can save workload and ensure symmetry.

Master the key points of using the symmetry modifier: Determine the symmetry axis of the chair before modeling, usually in the middle of the chair, that is, along the central plane of the Y-axis or X-axis. After building one side of the model, directly add the 'Symmetry' modifier and select the correct mirror axis in the modifier. Do not directly copy and mirror the object at the main level. Prioritize using the 'Symmetry' modifier. Its advantage is that you only need to edit one side, and the other side will be previewed in real-time. Moreover, subsequent operations such as 'sculpting' or 'deformation' are more convenient.