Is your model very far from the SketchUp unmodified origin point? That also causes screen artifacts to appear in otherwise clean models.
Good question. How would I locate the origin point?
After lots of iterations they do migrate.
lanefab coplanar error test file.skp (5.8 MB)
Here’s a 6mb file with the roof object demonstrating this behaviour.
Turn on the Axes in the view menu.
2351 feet. Almost half a mile.
Why? The model shouldn’t be migrating like that.
It would also help with your modeling if you keep on top of the face orientation. There shouldn’t be any exposed blue backfaces.
Interesting… I think moving it closer to the origin helped.
Over the course of a year or two we will copy new iterations and sometimes delete the originals… this causes the model to migrate, but we’ll change that up if the origin in important. thanks
To me it didn’t help at all. I moved your model to the origin and the face that showed the issue still has that very same problem.
Is (part of) the model imported from other software?
No - It’s all built from scratch, aside from imported components and textures
Bringing the model to the origin with the edge that you had drawn on the roof did nothing to the double faces. After deleting that edge the problem vanished . A new edge does not reveal the same issue. Things seem to have healed themselve near the origin.
Sounds like the plot to a Matrix movie
…but, yes this seems to work.
Appreciate the help
This problem has persisted for me regardless of the distance from the origin. Everything is the same for me as the OP described. The model was started from scratch, all edges and points are on the same plane (no front-and-back of a sheet of plywood effect as referenced earlier). Multiple overlapping faces (usually 3) are created for each coplanar face after bisecting with a new line. In this case though, new overlapping faces generate over any face even adjoining an existing line that is redrawn. The process of deleting a dozen extra faces every time I alter the linework is very frustrating.
Please upload the model so it can be examined.
I am having this problem as well and would love any knowledge anyone has of the cause or a fix or easy workaround. I will try to attach the model in a moment, but am including a series of screenshots first. When I create an edge over the top of an existing edge, and it is part of a completed loop around a plane, instead of creating a single new surface it creates two or three seemingly coplanar ones. Exactly as others above. My visual clue that this has happened is usually that the material painted on an existing surface suddenly become half-obscured by the unpainted new surface/s, again exactly as above. This happens whether or not there is already a surface within the ‘loop’ or not. It also happens when subdividing, same as others. The origin is right at one corner of the model geometry, so it’s not that. The model started out as a messy 3D scan of an existing building, converted to Revit, then converted to SU, than I then built new clean geometry into, and this is happening within my newly-modeled portion. And I have encountered this with other models that were built from scratch, so that does not seem to be the cause to me. The model is about 70MB, and I find it hard to make meaningful models that are smaller. Right now I am working in a group within a group making a 2D drawing, so that is the example I am posting in the screenshots, but this seems to be happening all over the place in this model. In other models I got the feeling it was related to edges and surfaces that developed super-tiny angles and non-coplanar imperfections, which felt like were either causing SU to act buggy or which were just too tiny for me to easily recognize. So in other models I have spent a lot of time trying to manually purge these little bits of barely-not-straight geometry as I found them, and it seemed(?) to help, but that does not seem to be the case here. As far as I can tell, in this model everything is truly coplanar, including all these multiple faces.
Anyone have any developments on this thread?
CD_02_draft CD 1—for SU forum.skp (9.6 MB)
here is a version of the model. I had to remove lots of what you see in the screen captures to get down to the size allowed for uploads so if this is an inherited behavior that’s a function of an error triggered by now-deleted geometry or size I’m not sure how valuable this might be, but the behavior does persist in this model, and in the same spot.