Multiple faces driving me crazy!
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@hellnbak said:
Yup, that did it. I'm assuming this model is made up of just normal faces, so what does using the select tool first, and specifically right to left, have to do with it.
Just a method of counting the number of overlapping faces.
If one of the faces had a different material you'd see z-fighting. -
@thomthom said:
Here's a sample of mine. Draw lines on the faces in this model and you'll find that SketchUp starts adding extra faces where there already are faces.
Hi Thomas, I see the issue. And it's not difficult to see where it originates from. Bad geometry. Unfortunately you present a model with faces that aren't flat to begin with. There are latent two faces to begin with for each large side face, although SU cannot show the diagonal. Most likely because it's waywithin tolerance.
Concider one face, the one that looks like a rectangle.
Measuring differences perpenducular to the face with the 'Tape Measure' tool isn't helping much after self aligning axes (right click > Align Axes) to the face. Maybe SU gets confused because of whatever?
So align the axes manually and forget the 'Tape Measure' tool but...- ad a 10mm line on the face, perpendicular to the face.
- select the face and the 10mm line.
- select the 'Scale' tool and scale both face and 10mm line up by 100 and again by 100.
The result is a twisted face without a (hidden) diagonal. Apply 'Fix Problems' to see the change happening. The geometry was bad to begin with.
(I wonder if it has anything to do with having length snapping off. I have it on all the time although small)
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@wo3dan said:
....So align the axes manually......
By that I mean: use the base edge for red and the hinge edge for green.
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@wo3dan said:
(I wonder if it has anything to do with having length snapping off. I have it on all the time although small)
hmm... Maybe..?
I was wondering if it had something to do with minor deviances occurring when you transform entities.
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@wo3dan said:
Yes, that's what I said.
@hellnbak said:...You really need to buy a lottery ticket
I'd rather have that model of yours instead of the ticket.
For I also never win with lotteries.
Hi hellnbak, you're right, Murphy strikes again.
I checked your model. No extra faces.
And when I try to divede (manually) trianglular faces notting odd happens.
b.t.w. I did answer your question. I may have exaggerated a bit but then it must have been quite some time ago. As soon as some irragularity happens I surge till I can get rid of it.
There seldom seems to be something going wrong.
Do you have 'length snapping' on? I do. And sometimes I can even see that minor differences are overcome by SU snapping to nearby geometry. I checked Thomas's geometry which was incorrect to start with.My PC is over 5 years old and in bad shape. SU is good though. Still interested?
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Checking the lengths of the edges in the face - each parallel set:
` 53.9597217259116
53.960193935468499.2125910192198
99.2125910458392`
So while SketchUp will colour them parallel with the model axis - they are yet different enough to cause problems.
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This is turning into an episode of CSI. But I'm following with interest
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hello i have got the same problem in my model, but when i move surface from corner point to center of the origin and it is solved. But what's the relation between them i can not understand and also if it possible to works for all models.
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I know this is an old post, but this is exactly the same problem that I have on nearly any model that I import from an STL. It takes hours to fix and because of it I am seriously ready to ditch SU for Fusion.
It's NOT caused from bad geometry practices so don't even say it! I can have a hole in the mesh and literally draw 1 line to close it and it will create many extra faces. I have had up to 15 extra faces on top of each other! This is a serious bug and I cannot believe it is still going on many years later!
Most of the holes are caused when I import an STL into SU like I did with the example file that I am including. I have already painstakingly closed each hole up manually since I have yet to find an extension that can do this automatically. I bet I spend 50% of my total time in SU just fixing holes and deleting extra faces, this is simply unacceptable.
Please help if you know what is going on and how to fix it.
Thanks!
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