How to solve the issue of non-overlapping intersection points in CAD drawing
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I didn’t learn CAD during my school days, and now I need to use it, so I’ve started learning it on my own. First, I watched some tutorials online, and then I tried to figure it out on my own. During the drawing process, I encountered a problem: assuming I first drew a circle and then drew many line segments with the center of the circle as their starting point (these line segments intersected at the center), a small yellow box appeared on the CAD interface – that’s the indicator for capturing intersection points. However, when I zoomed in on the image by scrolling the mouse wheel, it became clear that these line segments did not actually intersect. What causes this, and how can it be fixed? I would also appreciate some advice from those who are more experienced on how to learn *CAD Thank you.
The last edit to this post was made by zhouzurui on 2010-6-7 at 17:25. Regarding the sentence \"Then many line segments were drawn with the center of the circle as their intersection point\", I’m not sure how you managed to do that. I drew 6 diameters of the circle (line segments whose midpoint is the center of the circle), and no matter how much I enlarged the diagram, those line segments always intersected at one point – the center of the circle. It follows that not all of the line segments you drew have the center of the circle as their midpoint. Also, the statement that \"a small yellow square appears on the CAD interface; it is the indicator for capturing intersection points\" is incorrect, because the indicator for capturing intersection points is a cross, while the small square represents an endpoint. As for learning CAD, it’s best to find an expert as a teacher – trying to figure it out on your own is quite slow!
You need to capture that “cross”, which is the intersection marker; the yellow squares aren’t always accurate. Learning CAD means becoming familiar with the usage of each command, and practicing with actual drawings will help you progress faster
Reply to 2# zhouzurui: Thank you for your advice. After reading your reply, I identified the problem. I marked the center of the circle, and as a result it turned into a cross; when I drew multiple line segments intersecting at that center, the yellow squares that appeared indicated that the endpoint of the cross was being captured, rather than the actual center of the circle. Also, you are correct regarding the intersection marker being a small ×; it was my lack of attention and insufficient observation.
Reply to 3# xhzp: Actually, I really want to practice using real diagrams*, but those real diagrams are very complex flowcharts with many 【layers】 (Note: I only know the names of the layers; I don’t understand their functions or meanings), and I don’t know where to start when trying to draw them.
Each layer represents an image; the layers are set by you. It’s best to find an experienced person to guide you, as their methods are simpler and easier to understand than those described in books
No, I have the same problem~ I saw the reply above and it solved it
When drawing diagrams, the point capture is incorrect; using the intersection point as a reference is more accurate.