CAD is an automatic computer-aided design software produced by Autodesk Company in the United States, which can be used to draw two-dimensional drawings and basic three-dimensional designs. You can draw it automatically without knowing how to program it. CAD is widely used in the world, which can be used in many fields such as civil construction, decoration, industrial drawing, engineering drawing, electronic industry, garment processing and so on. No matter what field you want to work in, you can teach yourself CAD. Here are the basic introduction, intermediate advanced and advanced video tutorials of CAD. Yutu is committed to helping friends quickly master the use of CAD. If you study CAD, don't miss these CAD tutorials.

Introduce three skills of CAD drawing.

Use the "↑" and "↓" keys

Everyone knows the function of up and down arrow keys in DOS. If you run DOSKEY, it can remember every command you enter. When you use the same command again, you don't need to type it again. Just use the up and down arrow keys to select. In AutoCAD, you can also use the up and down arrow keys to select a previously typed command. This is most useful when entering text. Whether it is text or DTEXT command, you can use the up and down arrow keys to reduce the input amount of the command when entering text. Of course, the number of lines recorded by AutoCAD is limited, but it can be increased by setting. The steps are to select [Tools] → [Preferences ...] → [Display]. The second line in the [Textwindowparameters] box, "Number of lines in the text window", is the number of lines to be recorded. The larger the value entered, the more records will be recorded. But if the memory of the machine is low, it is better to set it less. To avoid accidents, its value is between 25 and 2048. My machine memory is 128M, and this value has been set to 2048, but there is no error. You can try several times according to your computer and find the right value. In order to make the selected commands effective, when using AutoCAD, it is necessary to minimize the repetitive and meaningless commands input from the keyboard, such as the use of the call-in and cancel commands of the layer dialog box, and it is best to call the menu if it can be called.

"!" Use of keys

"!" Keys are also useful? Yes, let me give a concrete example to introduce its usage.

Suppose there is a line with a known length on the screen (single line, polysemy line, of course, unknown length is also acceptable), and it is required to shorten a certain length and keep the direction unchanged. I think every CAD user will have his own method, but I don't think there will be less than three commands and "!" Will be changed to use. As an auxiliary command, you can use a command, and the operation process is as follows:

In the "Command:" state, directly select the line to make its grip appear, move the cursor to one end to be shortened and activate the grip to make the line become a stretchable rubber band line, and move the cursor in the direction of the line to make the rubber band line coincide with the original line segment, and the moving distance is unlimited. Some people think that the moving direction can't be the same as the original one, so they use the auxiliary point command, enter "near" after the screen prompt and press the space bar. Xx "(xx is a specific value) and then press enter, the length of the line will change. How about it! If you don't believe me, use the list command to see the length of this line segment before and after this command is executed.

Retrieve font

The most annoying thing for people who use AutoCAD to draw pictures is that the pictures copied from other places can't find the corresponding fonts in this machine, which leads to all kinds of garbled codes. The reason why I can't find the font is because the font used by others is different from the storage location in my own machine. The general solution is to redefine them, but sometimes this method is not always effective, and in this process, it may also lead to unexpected errors, lead to AutoCAD crash, and even lead to the destruction of graphics files. By chance, I used another AutoCAD command, killing two birds with one stone, that is, I used the recover command.

First, run AutoCAD, select the "Restore" command in the file menu, select the graphics to be processed, and repair them. During the repair process, a dialog box will appear asking for font selection. At this point, you can click on the correct font file to redefine it, and the repaired text can be displayed normally. One thing to remind you is that if the Chinese used in the graphic file is a non-GB coded font file, you need the corresponding font file to display the text normally.

The above is the introduction of "three tips for CAD drawing". I hope this tutorial is useful to you. Try it with the tutorial. Click this link to learn more about CAD tutorials: