I used a Knife projection tool to cut the cockpit window out of a fuselage. But after that, I get some artifacts. (These weird lines coming out of the window.) Cannot understand what is the cause for them. Thanks in advance.
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$\begingroup$ Please clarify your specific problem or provide additional details to highlight exactly what you need. As it's currently written, it's hard to tell exactly what you're asking. $\endgroup$– Community BotCommented Dec 22, 2021 at 20:49
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$\begingroup$ Would you be kind enough to upload the file? I guess it is just a topology problem caused by the knife project. $\endgroup$– mqbaka mqbakaCommented Dec 23, 2021 at 8:14
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$\begingroup$ Uploaded .blend $\endgroup$– Arseni KalbinCommented Dec 23, 2021 at 8:35
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1 Answer
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Ok I took a look at your blend file and your mesh has a lot of n-gons and triangles :
They are the culprit behind that ugly shading that you see and to avoid those, you should always model with only quads as much as you can.
I see that your original model was made of only quads but the knife project is what caused the mess.
To solve this, you would need a lot of retopology.
There are other ways to solve this problem but this is what I would do :
Place the cursor at the origin of you object (the fuselage), you can do that with SHIFT + S and then Cursor to Selected, and create a new cube from there.
Delete all the vertices of the new cube except for 1 and add a mirror modifier to the cube with Clipping enabled :
Turn on snapping with Snap to set to face :
Then you can begin to remodel your fuselage by beginning with the windows :
This may take a little time but the presence of your ancient mesh with the use of snapping make it really fast and easy.
If you keep you topology to quad only, you should avoid the problems mentioned in the question :
Just remember a few tips to ease your modeling for shapes like this :
- Try to always surround holes and extrusions with loop cuts.
- Always plan your topology carefully before modeling
- Avoid odd number of vertices around holes
There are many tutorial online if you want to learn modeling.
