The processing method of fine carved straight grain surface involves some professional carving techniques and design principles. First, you need to use the fine sculpting software to create the straight grain surface. In the software, you can use the straight surface command to connect two cross section lines to create a straight surface. These cross-sectional lines can be composed of a number of continuous curves and surface boundaries, or points on the curve (including endpoints) can be selected as cross-sectional lines.
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In addition, you can further understand and master the skills of using straight grain surfaces through practical models. For example, you can learn the specific use of the straight grain surface by making the seamless surface of the tilted pie model and the connecting surface of the cylinder in the middle of the upper and lower model.