How can those who haven’t learned CAD master it quickly?

Buy a tutorial or download one from the internet, get familiar with the basic commands in CAD, try drawing some simple diagrams. With a bit of patience, it won’t take long to master how to draw floor plans

Generally, there are two possible reasons for learning quickly*: one is personal interest, and the other is being forced to do so. Your current situation is just right for it. It can be said that getting started with CAD is simple; it’s just that mastering it helps avoid unnecessary detours. Familiarize yourself with the basic commands and ask questions frequently (ask colleagues, post inquiries)

Everything is difficult at the beginning, because you don’t know it yet. In my opinion, the following is the shortcut. 1. Find someone who knows how to do it and ask them to explain to you simply the process of drawing a picture, starting from creating a new blank page. 2. Find a book and get familiar with various instructions in it; I’m referring to the commonly used ones, and you can learn the less common ones later when you need them. 3. Find an image and start drawing based on it; only through continuous practice can one become skilled at it. In the process, it is also necessary to keep communicating with others to improve more quickly.

I’m also just learning it; thanks for sharing

Buy a simple tutorial, first learn how to use the basic commands, and then draw by yourself. Draw a few more and it will be fine.

There are Flash tutorials online; you can learn while watching them. When forced to do something, one learns quickly, and learning with a goal makes things much more efficient

Familiarize yourself with some basic commands and practice them repeatedly; skill comes with practice. In my opinion, the most important aspect of drawing is three-dimensional imagination.

Common CAD shortcut keys: AIT+O+C – Color (AIT+O will be omitted here); +N – Line type; +L – Layer; +W – Line width; +S – Text style; +D – Dimension style; +Y – Print style; +P – Point style; +M – Multiline style; +V – Unit style; +T – Thickness; +A – Circular boundary; +R – Rename. For drawing (direct commands): OT – Single-line text; T – Multi-line text; B – Create block (repeat); I – Insert block (repeat); A – Arc; MI – Mirror; M – Move (it’s worth trying this command); SC – Scale; LEN – Stretch (repeat). Functions of F1–F11: F1 – Help; F2 – Text window; F3 – Object snap; F4 – (Forgot); F5 – Isometric plane; F6 – Coordinates; F7 – Grid; F8 – Ortho; F9 – Snap; F10 – Polar tracking; F11 – Object tracking. Here are some adjustment values for metal materials; I find these to give better results, and they might be useful: Metal: 100/20/50, Reflection: 100. Common AutoCAD 2002 shortcut keys: 3A – Use object to create 3D array; 3DO – Rotate spatial view; 3F – Create 3F face; 3P – Specify starting point of multiline; A – Arc; AA – Calculate area and perimeter of a shape; AL – Align; AR – Array; ATT – Define attributes; ATE – Block attributes; B – Define block; BH – Define hatch; BO – Create boundary; BR – Break; C – Circle; CH – Modify object properties; CHA – Make right angles; COL – Color; CO – Copy; D – Dimension settings; DAL – Dimension creation; DAN – Angle dimensioning; DBA – Arc dimensioning; DCE – Center mark; DCO – Continuous dimensioning; DDI – Measure diameter of circles and arcs; DO – Concentric circles; DOV – Modify dimension variables; DRA – Dimension radius; DIV – Divide equally; DI – Measure; DT – Enter text; DV – Camera adjustment; E – Delete; ED – Modify text; EL – Ellipse; EX – Extend; E*T – Exit; EXP – Export data; EXT – Stretch; F – Round corners; FI – Select filter; G – Group objects; GR – Options; H – Fill; HE – Associative fill; I – Insert elements; IMP – Import file; IN – Boolean operations; IO – Insert document program; L – Line; LA – Layer editing; LE – Text annotation; LEN – Modify object length and other values; LI – Display object properties; LO – Layout options; LS – Command history; LTC – Line type settings; LWC – Line width settings; LTS – New line type scale factor; MC – Move; ME – Divide equally; ML – Multiple lines; MT – Text; OS – Snap settings; O – Offset; OP – Options; ORBIT – Rotate; P – Translate; Pl – Continuous line; Po – Point; Pol – Polygon; PR – Options; PRE – Page view; PRINT – Print; PU – Clean up; PE – Modify polyline; REA – Redraw; REN – Rename; REC – Rectangle; REV – Rotate into 3D face; RO – Rotate object; S – Stretch; SCL – Scale; SCR – Script file; SEC – Solid cut; SHA – Shade; SL – Slice; SN – Specify snap distance; SP – Spell check; SPL – Spline; SI – Text style; SU – Boolean operations; TO – Custom toolbar; TOR – 3D ring; TR – Trim; UC – User cursor; UNI – Merge 3D objects; V – View; VP – Viewpoint settings; W – Create block; X – Explode; XA – X-ref file; XB – Lock external reference; XC – Clip; XL – Reference line; XR – Manage external references; Z – Scale. 1. Drawing: Line – LINE/L; Construction line – xline/XL; Multiline – mline/ML; Polyline – pline/PL; Regular polygon – polygon/POL; Rectangle – rectang/REC; Arc – rc/A; Circle – circle/C; Spline – spline/SPL; Ellipse – ellipse/EL; Insert block – insert/I; Create block – block/B; Hatch – bhatch/BH; Multi-line text – mtext/MT. 2. Modification and deletion: Erase – E; Copy object – copy/CO; Mirror – mirror/MI; Offset – offset/O; Array – array/AR; Move – move/M; Rotate – rotate/RO; Scale – scale/SC; Stretch – stretch/S; Trim – trim/TR; Extend – extend/EX; Break at point – break/BR; Round corners – chamfer/CHA; Fillet – fillet/F; Explode – explode/X; Match properties – matchprop/MA; Undo – CTRL+Z/U; Pan – Real-time translation/P; Zoom – Real-time scaling/Z; Properties – CTRL+1; Cancel – U; CTRL+Z; Clear – DEL. 3. Dimensions and their settings: Dimension style manager – DIMSTYLE/D,DST; Create coordinate point dimension – DIMORDINATE/DOR; Create linear dimension – DIMLINEAR/DLI; Create center line or center mark for circle or arc – DIMCENTER/DCE; Create aligned linear dimension (diagonal) – DIMALIGNED/DAL; Create diameter dimension for circle and arc – DIMDIAMETER/DDI; Create radius dimension for circle and arc – DIMRADIUS/DRA; Create angle dimension – DIMANGULAR/DAN; Tolerance – TOLERANCE/TOL. 4. Others: F1 – Help; F2 – Text window; F3 – Object snap; F4 – Digitizer; F5 – Isometric plane; F6 – Coordinates; F7 – Grid; F8 – Ortho; F9 – Snap; F10 – Polar axis; F11 – Object snap tracking. CTRL+N – New; CTRL+O – Open; CTRL+C – Close; CTRL+S – Save; CTRL+A – Save as; CTRL+V – Print preview; CTRL+P – Print; CTRL+D – Send. Degrees – %%D; Positive/negative sign – %%P; Diameter symbol – %%C. Recovering CAD fonts. Posted on Sunday, October 16, 2005, 2:46 PM. #CADKnowledgeCollection. For those who use AutoCAD for drawing, the most annoying thing is when fonts from externally copied drawings cannot be found on the local machine, resulting in various garbled characters. The reason for this is that the location where others store their fonts differs from that on one’s own computer. The usual solution is to redefine the fonts, but this method isn’t always effective. It may also cause unexpected errors that can crash AutoCAD or even destroy the graphic files. Another AutoCAD command was used to achieve two goals at once, namely the recover command. First, run AutoCAD, select the “recover” command from the File menu, choose the drawing that needs to be repaired, and proceed with the repair process. During this process, a dialog box will appear asking you to select a font; at that point, you can choose the correct font file to redefine it. Once the repair is complete, the text will display properly. There is one thing I would like to remind everyone about: if the Chinese characters used in the graphic file are in a font file that isn’t encoded in GB format, you will need the corresponding font file in order for the text to be displayed properly. Drawing thick solid lines in AutoCAD Posted on Saturday, October 15, 2005 10:59 AM #CAD Knowledge Collection Technical drawing **standards specify the line types used in mechanical drawings. There are various ways to draw thick solid lines in AutoCAD 2000, and the simplest method is to use the lweight command. This command can be entered directly in the command line, or you can select the drop-down menu Format/Lineweight; in the resulting dialog box, set the desired line width. The default line width is 0.25 mm, and the slider can be used to adjust the scale at which the line width is displayed on the screen. This is a transparent command. You can also click the layers icon on the object properties toolbar; in the Layer Properties management dialog box, you can set the line width just as you would set color and line style. Therefore, when the plotter generates the output, there is no need to adjust the pen width or line width anymore. Some lines are missing when printing CAD drawings! (Discussion) Posted on Sunday, October 16, 2005 2:29 PM #CAD Knowledge Collection 1. Please share your insights. Why do some lines disappear when my CAD drawings are printed? But my original image is still intact! 2. If the image is quite large, it might be a problem with the printer’s memory; try using a more advanced printer. 3. I’ve encountered this issue as well – when CAD files from one version are transferred to another computer (with a different CAD version), although all the elements can be displayed, some lines may be missing during printing. The same problem can occur when printing graphics using different add-ons. I don’t know the reason for this issue, so I try to print the graphics on the computer where they were designed. I’m not sure if the situation for the original poster is the same as mine. 4. I used version 2004 of the software, saved the file in 2000 format, and then tried to print it! I don’t have my own printer! My graphs aren’t very complex either; I print two graphs, one of which has just one label and is still considered fairly complete. If it’s a problem with the printer, then there’s no need to worry. I’ll print it using WORD! 5. Check to see if that layer has been set to be disabled from printing, as this kind of problem often occurs when working with different versions of various software. 6. When setting the line styles, some of the line style options have a \"not printable\" icon; click on it to change it to a \"printable\" icon. I have encountered this situation before. 7. My situation and the original poster’s situation is not what you’re describing; one or two lines simply disappear for no reason. For example, there are ten dashed lines in the diagram, but after printing, only nine remain – one dashed line fails to be printed. Moreover, both the layer settings and the printing settings are correct; there are no issues such as “layers cannot be printed” or “line styles cannot be printed” as you mentioned. If that were the case, then all line styles would fail to be printed, rather than just a few individual ones. 8. It is related to the layer settings and the printer’s memory. AUTOCAD tips… How to turn off *BAK files in CAD. Posted on Sunday, October 23, 2005 2:55 PM #CAD Knowledge Collection (1) Tools – Options; select the “Open and Save” tab, and then in the dialog box uncheck the box next to “CREATE BACKUP COPY WITH EACH SAVES”. (2) The ISAVEBAK command can also be used to set the system variable ISAVEBAK to 0; when this system variable is set to 1, a “*BAK” backup file is created every time something is saved. AUTOCAD tips… The difference between using “-” before a command and not using it. Posted on Sunday, October 23, 2005 2:54 PM #CADKnowledgeCollection The meaning of “-” and not using “-” in AUTOCAD is different; the use of “-” was introduced in AUTOCAD 2000 as a way to ensure that commands had a consistent format across different language versions. Adding a “-” before the command enables command-line mode for that command; without it, dialog box mode is used. To be more specific: when a “-” is added, no dialog box appears during command execution, and all commands are entered in the command line. Without the “-”, a dialog box appears when the command is run, and parameter entry is done within that dialog box. AUTOCAD tips… Fatal printing error Posted on Sunday, October 23, 2005 2:47 PM #CAD Knowledge Collection Solutions for fatal errors that occur when using AUTOCAD (2002 and 2004) to print on an XP system: Do not enable the printing stamp feature in AUTOCAD; if it is already enabled, rename the ACPLTSTAMP.ARX file located in AUTOCAD’s root directory or delete it. However, AUTOCAD cannot be run during deletion, and administrator privileges are required; otherwise, deletion is not possible. AUTOCAD tips… The toolbar has disappeared. Posted on Sunday, October 23, 2005 2:42 PM #CAD Knowledge Collection If the toolbar disappears in AUTOCAD, right-click on that area, or go to Tools – Options – Configuration – Reset. You can also use the MENULOAD command; after that, click Browse and select ACAD.MNC to load it. Why are some Chinese characters displayed as question marks when opening someone else’s CAD file? Posted on Sunday, October 23, 2005 2:36 PM #CAD Knowledge Collection There are many possible explanations for this issue; I’ll give a brief overview. ①If you use a CAD program version R14 or higher to open a DWG file in R13 format or earlier, character corruption may occur; there are various ways to resolve this issue. I won’t go into detail here; if you’re interested, we can discuss it. ②For Chinese characters that display garbled text, you can use tools such as properties to find out which font they belong to. Perhaps you don’t have the font file for that font, or the font file you selected as a replacement is not compatible with it. ③Furthermore, garbled text may be due to errors in your DWG file. You can first use the RECOVER command to fix it. (This method should be the preferred one, the first solution to try when you encounter drawings with characters that raise doubts.) There are some other potential problems as well, but they won’t be discussed here one by one; you can try more experiments. After all, the most natural and effective way to understand CAD is to face problems and then solve them on your own. Only in this way can improvement be achieved, and the memory will never be forgotten. Are the “Copy” (Ctrl+C) and “Paste” (Ctrl+V) commands in CAD2002 not working? Posted on Sunday, October 23, 2005 2:32 PM #CAD Knowledge Collection Recently, CAD2002 has loaded some lsp and menu files *.mnu, and the “Copy” (Ctrl+C) and “Paste” (Ctrl+V) commands in CAD2002 are not working? Why? What should I do? I would appreciate your advice. First, check the following: Tools – Options – User System Configuration – Windows Standard Acceleration Keys (it should be checked). If it still doesn’t work even after checking this option, then try entering QAFLAGS in the command line → press Enter → enter 0 → press Enter. Animation demonstrations of mechanisms in the AutoCAD environment. Posted on Sunday, October 23, 2005, 2:25 PM. #CADKnowledgeCollection AutoCAD is a very popular design software that is widely used in various fields such as machinery, electronics, architecture, and fashion. Its strong practicality, user-friendly interface, excellent cost-performance ratio, and ease of use make it highly favored by engineering and technical professionals. More importantly, it features an open architecture that allows users to expand and modify it in almost every aspect, thereby meeting users’ specific requirements to the greatest extent possible. There are many methods for secondary development in AutoCAD, and the more common and traditional one is development based on the AutoLISP language. This article takes the animated demonstration and motion analysis of the four-bar mechanism, which is the most common in mechanical transmission, in the AutoCAD environment as an example to illustrate a method for creating animations in this environment. In fact, any animation is the continuous playback of a collection of multiple similar instantaneous still images (i.e., frames). The same is true in AutoCAD; we simply achieve a more precise quantification of the mechanical model by adding appropriate geometric constraints. For example, in the crank-rocker mechanism shown in the diagram, the crank is constrained by pivot point A and can only rotate around this point. As it rotates, it causes the connecting rod and the rocker to move accordingly under various constraints, with a one-to-one correspondence between these movements. This corresponds to the equations we derived, and these equations are key to using AutoLISP for creating animations and performing motion analysis. We first specify the initial position of the mechanism and an increment in the crank rotation, after which the computer calculates the next position. Here we can use polylines to draw the connections of the model, and the motion of the mechanism becomes a matter of periodically modifying the positions of the vertices (i.e., hinges) of these polylines. The motion equations related to the four-bar mechanism will not be discussed here; instead, the usage of the program commands and the design approach will be briefly explained. Copy the attached program file to any word processing software (such as Notepad) and save it in *.lsp format (for example, sg.lsp). This program file should be placed in a directory that can be accessed by CAD (such as..\program files\acad2000\Support). Open AutoCAD and enter (load “sg”) in the command line to load the program. Once it is loaded successfully, the message “《Four-Bar Mechanism Motion Analysis Program》 has been successfully loaded. Enter sg to run it!” will appear in the command line ”At this point, entering sg in the command line will run the program. You can also access the program loading dialog by using the menu button Tools->Load Application..., locate the sg.lsp file that has been saved on disk, and click the Load button to load the program file. The advantage of the latter method is that it is not restricted by the search path. If the program cannot be loaded correctly, please check whether sg.lsp is saved in the appropriate directory and whether its contents are complete. After loading the program correctly, you should first set the initial position of that device, and then enter ‘sg’ in the command line to execute the command Capture the four points in sequence: hinge A where the crank is in contact with the ground, the hinge between the crank and the rod, the hinge between the rod and the rocker, and hinge B where the rocker is in contact with the ground. Entering V allows adjustment of the rotation speed, entering C enables automatic continuous observation, and entering L automatically plots the motion trajectory. By default, pressing Enter directly allows step-by-step observation. During continuous observation, the operation can only be stopped using the cancel button. Upon exit, provide the required data (add different supplementary statements as needed). After observation and testing, we may need to make appropriate adjustments to the mechanism. To avoid the hassle of drawing initial position diagrams and re-locating the contacts, we can use grip points to make the necessary adjustments to the mechanism. The model can be rebuilt only after the original organization model is deleted. Using this method, we can also create other mechanism models, such as crank-slider mechanisms, or composite mechanism models composed of several simple mechanisms. I have successfully created a mechanism model program for analyzing the fabric feed mechanism of the GC6150M high-speed flat sewing machine, which has improved the speed at which problems can be analyzed and solved. Of course, we can also use other drawing software such as Pro-E and SolidWorks for mechanism analysis, and we can still achieve our goals in this way, but it requires us to master the skills needed to use them. Appendix: Content of the sg.lsp file
(defun c:sg(/ os ff1 w1 w2 w tt x y e f g kf tis)
(setvar “cmdecho” 0)
(setvar “osmode” 0)
(initget 7 “”)
(if ba (setq jc (entget ba)))
(setq tis nil)
(if (null jc)(setq ba nil))
(if (null ba)(setq ppa (getpoint “\nPlease enter the starting positions of four hinge points sequentially.\nFirst point: ”)))
(if (null ba)(setq ppb (getpoint ppa “\nSecond point: ”)))
(if (null ba)(setq ppc (getpoint ppb “\nThird point: ”)))
(if (null ba)(setq ppd (getpoint ppc “\nFourth point: ”)))
(if ba (progn
(setq tm 1 jc (cdr jc))
(while jc (if (= ‘10 (car (car jc))) (progn
(cond ((= tm 1)(setq ppa (cdr (car jc))))
((= tm 2)(setq ppb (cdr (car jc))))
((= tm 3)(setq ppc (cdr (car jc))))
((= tm 4)(setq ppd (cdr (car jc)))) )
(setq tm (1+ tm)) ) )
(setq jc (cdr jc)) ) ) )
(setq ll1 (distance ppa ppb))
(setq ll2 (distance ppb ppc))
(setq ll3 (distance ppd ppc))
(if (null ba) (progn
(command “pline” ppa ppb ppc ppd “”)
(setq ba (entlast)) ) )
(setq ff1 (angle ppa ppb))
(setq w1 (angle ppc ppb) w2 (angle ppc ppd))
(if (< w1 w2) (setq w 1))
(if (null zzs)(setq zzs 0.1 kai 0))
(princ “ \nExit\\VSpeed\\CContinuous\\LTrajectory line\\:” )
(setq tt (strcase (getstring)))
(if (= tt “V”(get_v))
(while (or (= tt “L”(= tt “”)（= tt “C”))
(setq x (- (car ppd) (car ppa)) y (- (cadr ppd) (cadr ppa)))
(setq e (* 2 ll3 (- x (* ll1 (cos ff1)))))
(setq f (* 2 ll3 (- y (* ll1 (sin ff1)))))
(setq g (- (+ (* x x) (* y y) (* ll1 ll1) (* ll3 ll3)) (* ll2 ll2) (* 2 x ll1 (cos ff1)) (* 2 y ll1 (sin ff1))))
(setq kf (- (+ (* e e) (* f f)) (* g g)))
(if (> 0 kf)(setq zzs (- 0 zzs) kai 1)(setq kai 0))
(if (= kai 0) (if (= w 1)(setq ff3 (* 2 (atan (/ (+ f (sqrt kf)) (- e g))))) (setq ff3 (* 2 (atan (/ (- f (sqrt kf)) (- e g)))))))
(command “pedit” ppa “e” “n” “m” (polar ppa ff1 ll1) “n” “m” (polar ppd ff3 ll3) “x” “”)
(if (= tt “L”(command “line” ppc (polar ppd ff3 ll3) “” “line” ppb (polar ppa ff1 ll1) “”))
(setq ppb (polar ppa ff1 ll1) ppc (polar ppd ff3 ll3))
(if (not (or (= tt “L”(= tt “C”)))(setq tt (strcase (getstring)) tis 0)(setq tis 1))
(if (= tt “V”(get_v)) (setq ff1 (+ ff1 zzs)) ) )
) ) )
) ) )
) )
(defun get_v()
(initget 1 “”)
(setq zzs (getreal “\nEnter speed (0.1～5):”))
(if (= zzs “”) (setq zzs 1))
(setq zzs (* zzs 0.1) kai 0)
(princ “ \nExit\\VSpeed\\CContinuous\\LTrajectory line\\:” )
(setq tt (strcase (getstring)))
(if (= tt “V”(get_v)) )
(princ “《Four-bar mechanism motion analysis program》 has been successfully loaded. Enter ‘sg’ to run it!”) ") I. Quickly entering the position of a point: In ACAD, there are generally two ways to enter coordinates: rectangular coordinate system and polar coordinates. But we often use some other input methods. 1. When the direction of a line is known, its length can be entered directly. For example, to draw a line that extends 100 units to the right, we just need to set the capture mode to \"orthogonal\", then move the mouse to the right to indicate to the computer the direction in which the line should be drawn. Then enter 100 for the length. 2. Knowing the angle of a line (the angle it makes with the positive x-axis) and its length, when drawing the line one can select the direction first and then enter the length. For example: if the angle of a line is 48 degrees and its length is 100, it can be entered in this way: first, type “L” to start drawing a line, and then select a point as the starting point of the line. b、Enter"

I have here some tips on using shortcuts; I hope they’ll be helpful to you~~~

You can find many tutorials online; take your time, and you will definitely achieve something

I’m also just starting to learn; I watch video tutorials and then imitate what I see. Once I’ve finished organizing it, I’ll find a cloud storage service to upload it to.

1. First, read some simple operation guides by yourself and draw slowly. 2. When encountering something you don’t know, ask colleagues who are familiar with it. 3. Find some drawings done by others and draw them according to those, making sure the drawings are exactly the same!

You’ll get the hang of it if you use it often; when you have free time, draw cups or things in your own room. It’s possible to learn quickly but not master it thoroughly, so it’s better to take it slow

First, sit next to someone who knows how to draw and watch them, then try it yourself. Learning in this way is a process; take your time, and you’ll be able to master it soon