The Sketch toolbar linear Smart Dimension

Sketch on Solidworks is not much different from sketching on other CAD programs, it's just that if we make sketches on sketching solidworks take precedence then the size is determined using the smart dimension toolbar, this toolbar functions to give size / dimensions to the sketch that we make, both linear, angular, radius, diameter, and aligned. In the following section, I first identify the default buttons on the Sketch toolbar, followed by the rest of the entities that you can access by choosing Tools ➪ Customize ➪ Commands ➪ Sketch. Sketch opens and closes sketches. You may notice that the name of the button changes depending on if the sketch is open or closed. If you preselect a plane or planar face and then click the Sketch button, SolidWorks opens a new sketch on the plane or face. If you preselect a sketch before clicking the Sketch button, SolidWorks opens this sketch. If you preselect an edge or curve feature before clicking the Sketch button, SolidWorks automatically makes a plane perpendicular to the nearest end of the curve from the location you picked. If you do not use preselection, and only click the Sketch tool with nothing selected, SolidWorks prompts you to select a plane or planar face on which you want to put a new sketch, or an existing sketch to edit. 3D Sketch opens and closes 3D sketches with no preselection required. 3D sketch is covered in more detail in Chapter 31. Smart Dimension can create all types of dimensions used in SolidWorks, such as horizontal, vertical, aligned, radial, diameter, angle, and arc length. You can create dimensions several ways, as shown By selecting a line and placing the dimension By selecting the endpoints of the line and placing the dimension By selecting a line and a point and placing the dimension By selecting a pair of parallel lines and placing the dimension Selecting the line is the easiest and fastest method. Selecting parallel lines on the ends is not rec- ommended because if you delete either of the selected lines, the dimension is also deleted; however, sometimes this method is necessary. You can use the first and second techniques for the angled line shown in Figure 3.1 to create any of the three dimensions shown. To accomplish this task, drag the cursor while placing the dimension until the witness lines snap to the orientation you want.

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