I examined the model with zebra and it showed that the segments were matched, but when I changed the view to shade, an unmatched edge appeared. Is this a failure in modeling?
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We can understand it better if we look at the control points on the surfaces. I can help if you save the model in Rhino 6 format.
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@sciensman pls upload a model. In your zebra there appears to be a kink near the horizontal isocurve of that surface.
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Sadly, I closed the project before I save it. I supposed the question has an straightforward answer and didn’t know there is a need for uploading the file itself, sorry.
Hi, Mert
Can you explain the control points on two surfaces and their role in matching the two parts for smoothness? Should I adjust the two surface points?
Thank you
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I think this video will help you,
You can create better surfaces if you work with only as many control points as you need.
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Thank you so much, but I cannot watch the video due to a regional restriction. Is there any article to enlighten me instead of the video?
Ehhh don’t worry if you can’t watch it, honestly it’s bizarre advice.
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Ah yes, turning a single span into a multi-span completely unnecessarily.
There is no definitively correct way how to solve many surface problems; but that video definitely shows how to do it the most wrongest way.
Thank you all masters
When I trap in a difficulty and there is not a solution accessible I try to resolve the problem by myself, inevitably.
I left the first design and backed to one of the car body I modeled a month ago. It had the same defect, rather worse.
1- I used the surface control points.
2- CurveThroughSrfControlPt
3- Modified the pieces of the curves
4- Used surface from network of curves
And attained a perfect, neat and integrated surface.
The change of dimensions and shape was trivial and ignoreable.
Also, this one that was a part of a sport car was more complicated than the first one. I hope this works for the rest of the parts.
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One possibility is that there is not an unmatched edge. Shaded surfaces will look different depending on the direction of the surface, so it’s possible that your surfaces are not both facing the same way. In the attached image, the only difference between A and B is that one of the surfaces is flipped.
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Thank you, senior.
So, the direction of curves and surfaces is significant and I didn’t pay attention to this tip before.
How can I change the direction of surfaces?
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_Flip
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Thank you, sir
last night, I modeled this part with 1,2,3,4 patch method and after a series of matching it seems to be better than my previous works
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I think I could go a step further
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also I want to point out its not you its the software too… what your looking for is a true class A surface… you have to work alot harder in Rhino to get there… rhino is a Swiss army knife not a samurai sword for class A work. Once you get it though you can carry it everywhere.
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Hello, sir
I did mean, I could go a step further working with great Rhino in this aspect.
Yes, I know, it is some small steps in this long way; designing a perfect body of a car as a whole that is a highly professional engineering work with many complicated and unrevealed techniques.
Nevertheless, I am a talented person in designing with average knowledge in the mechanical context. I also have an intense interest in progressing in the scientific and technical ground. This feeling forces me to discover, innovate, and work tirelessly.
Nonetheless, I am still a student in this way. My question indicates that I want to learn some things that I don’t know.
I didn’t understand the example, the difference between a Swiss knife and a Samurai sword. Did you mean Rhino is not appropriate for class A work?
So yes you are capable of anything in Rhino bc it’s one of best price/performance/feature tool running on any computer. For example I brought a Mac laptop just to do rhino on it bc the their isn’t a better portable pairing than that. But for true class A surfacing I use NX on a desktop workstation bc you can’t believe how powerful it is… just like using a samurai sword… you will literally fall in love. but you will curse the software for most anything outside class A work… in same way you don’t carry a sword around in your belt. I mean you could but you would look foolish. This is why rhino is the best.
But I see some experts here have designed excellent cars in Class-A with Rhino?
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Also, I researched NX software on the internet. It is not as well-known as famous engineering software like Rhino, AutoCAD, Solidworks, and so on. There was no picture of a car body to be modeled with NX. In my opinion, it seems simpler and more primitive compared to giant software like Rhino.
This is a part of the definition about Rhino I found on a website that compared engineering software:
If you’re working with surfaces, Rhino has to be the top choice. When the tool first appeared, even the best 3D modeling software could only handle basic geometry and a few offered splines. Almost none of them could handle NURBS. That’s essential when you’re accurately modeling, for instance, the body of a vehicle or aircraft, or the curvature of someone’s face.