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In daily CAD drawing work, do you often face countless questions like, \"What should I do?\" For example, what if you want to view two different details of the same CAD drawing at the same time? What to do if the CAD fill command doesn’t work? What to do if the format brush is not working? ...But things are different now; you’re not fighting alone! The editor and the expert friends from the design institute have once again stepped in to compile this comprehensive guide full of useful tips for beginners learning CAD drawing! 1. How can I view 2 details of the same drawing at the same time? When viewing an architectural elevation, it is necessary to refer to the floor plan as well, but since these two elements are quite far apart from each other, it is not possible to view the details of both at the same time. In HaoChen CAD, simply enable the magnifier function and click the middle mouse button to create a temporary viewport. To close this temporary window, simply click the middle mouse button again. 2. What to do if the CAD fill command doesn’t work? If the fill command does not work, in addition to considering system variables, it is also necessary to check the OP option (OP—Display—Apply solid fill). After checking the option for entity filling, execute the re-generation command, and the filled area will be displayed. 3. What to do if there’s a problem with the format brush? The MA brush can be used to quickly copy properties, but there are times when it’s not possible to apply them, such as for color, line style, layers, etc. At this point, simply bring up the property settings by performing the necessary operations (MA—select the source object—S for settings), and then check the attributes you wish to apply. With this setting, we can synchronize formatting in a differentiated manner. 4. What should I do if a system variable has been modified by someone else? If the system variables or certain parameters of HaoChen CAD have been modified by someone else, how can these settings be restored? There is no need to reinstall the software or modify parameters one by one; simply restore the CAD system variables to their initial state (OP option—Configuration—Reset). 5. What should I do if the Model and Layout tabs disappear? If the Model and Layout tabs cannot be found in the CAD command line, you can use the Options window (OP Options – Display), check the boxes for displaying the Layout and Model tabs, and then restore their visibility. 6. How can I improve the speed of command operations? As is well known, there are two keys used for confirmation: “Enter” and “Space”. However, it is also possible to set up the use of the “right mouse button” for this purpose, which can make CAD drawing faster. Solution: OP options—User System Configuration—Use shortcut menu in drawing area (check this option), click “Custom Right-Click”, and check all options for “Repeat previous command”. 7. How can I reduce the size of CAD files? After completing the CAD drawing, use the PURGE command to remove unnecessary data, such as unused blocks, layers without entities, as well as unused line styles, fonts, and dimension styles, thereby effectively reducing the file size. Generally, thorough cleaning requires PURGING two to three times, until all the plus signs in the tree structure disappear, indicating that the redundant data has been removed. 8. What should I do if some text doesn’t appear? Do you often encounter situations where, after opening a CAD drawing, some text does not appear or appears as question marks? The reasons may be as follows: 1) The corresponding font does not use a Chinese character font, such as HZTXT.SHX, etc ； 2) There is no corresponding Chinese font file in the current system; the required file should be copied to the font directory of HaoChen CAD ； 3) For certain symbols, such as Greek letters, the corresponding font file must also be used; otherwise, question marks will be displayed. If it’s truly impossible to find the incorrect font, you can type the text again, set the correct font and size, and then use the format brush to apply those settings to the text with the wrong font. 9. What to do if there is occlusion in the area where elements overlap? In HaoChen CAD, entities have upper and lower layers, which can lead to occlusion. If the content of Element 1 is obscured by the content of Element 2, in the traditional interface, it is possible to move Element 1 to the front by using the drawing order toolbar, thereby preventing obscuration. 10. What should I do if an error occurs when opening an old image? When opening old CAD drawings, abnormal errors may occur, causing the program to terminate abruptly. How should we resolve this issue? A new graphic file can be created, and the old image can then be inserted as a block. 11. How do I perform grip operations on a shape? When you left-click on a CAD drawing, many boxes appear on it; these are the grip points. By controlling the grips, some basic editing operations such as COPY and MOVE can be performed. Different shapes also have other special operations, such as the ability to extend lines. 12. What should be noted when using scaling commands? The SCALE command allows the actual size of the selected object to be increased or decreased according to a specified scale factor. After executing this command, enter the [r] parameter to enter reference mode, and then specify the reference length and the new length. The reference pattern is applicable when the scale factor is not entered directly or is unclear. 13. What is the relationship between line width and printing scaling? LineWeight represents the absolute line width, whereas the line width of a polyline is relative. Regardless of the size at which the graphic is printed, the LineWeight remains unchanged, but the width of polylines changes depending on the scale of the printing size. The above is the comprehensive guide to getting started with CAD drawing that the editor has prepared for everyone – it’s full of useful information, right? Those who still don’t understand can leave me a message~ Follow me to learn more *useful tips for getting started with CAD!