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Apress beginning google sketchup for 3d printing - phần 2

hoặc bằng bất kỳ lưu trữ thông tin hoặc hệ thống thu hồi, mà không có sự cho phép trước bằng văn bản của chủ sở hữu quyền tác giả và nhà xuất bản.in và bị ràng buộc ở Hoa Kỳ (POD) tên đăng kí nhãn hiệu, biểu tượng, và hình ảnh có thể xuất hiện trong cuốn sách này. | CHAPTER 1 THE INS AND OUTS OF GOOGLE SKETCHUP AND SHAPEWAYS I added the dimensions for the cube in Figure 1-13 for better visualization. Just remember to select an edge when adding a dimension to the model. Creating a Cylinder Now you will learn how to draw a cylinder. Drawing a cylinder is similar to drawing a cube the only difference is that a cylinder is made from a circle. The cylinder you will be drawing has a radius of 250mm and a height of 500mm. Take a few minutes and try to draw one for yourself. Figure 1-14 shows what it should look like after you are finished. DIA 500.0mm Figure 1-14. Cylinder with a height of500mm and a radius of250mm Here are the steps to draw the cylinder. If you want to save your previous design please do so at this time. 1. From the menu bar select Start New. A blank modeling window will appear. 2. Click the Circle tool and then click the axes. 3. Drag your cursor outward release the mouse button type 250 and hit Enter on your keyboard. 4. Now select the Push Pull tool and select the top surface of the circle. Drag the circle upward release the mouse button type the value 500 and hit Enter. To move the model to the left or right you will first need to highlight it. 5. Select the Select tool. Starting from one end of the model click and drag the cursor to highlight the entire model. 6. Select the Move Copy tool click a surface or edge of the model and then drag the cursor in any direction you desire. Click once more to release the model. 15 CHAPTER 1 THE INS AND OUTS OF GOOGLE SKETCHUP AND SHAPEWAYS The Rotate tool allows you to orbit around the object for viewing the model from all angles. In addition it allows you to rotate around the model for editing. 7. Select the Orbit tool and then click and hold the cursor. As you move the cursor the object will also rotate. Release the cursor to stop rotating. Creating a 3D Pentagon For the next design you will be drawing a pentagon. How do you do this Remember that an object in SketchUp .