In addition to hoarding a lot of components and materials in your model you have a lot of incorrect tag usage. I fixed that in your model.
Then I purged unused stuff from your model.
Lastly, I selected everything near the origin, inverted the selection and found an edge and a guidepoint at a distance from the rest of the model. I deleted those things. See if this model behaves better for you.There’s a bunch of strange geometry such as the diagonals on the near end in this view. They were hidden but they should be deleted most likely. You also want to make sure face orientations are correct. There should be no exposed blue back faces in your 3D model.
BTW, you really need to be using components and groups for the geometry you’ve created in the model. As it is, you’ve just got loose geometry for all of it.
Most important (both before and after I went back to Safari because Chrome had an endless wait), I don’t dare hope it’s permanent, but it hasn’t crashed for a while. (I’m still saving it every few seconds just in case!) I hardly dare believe it but it seems better so far.
I’m still learning as I go, and haven’t progressed to grouping things. (I think I tried (when I used this last year), but got messed up, so have been keeping it simple, but apparently inefficient.))
You’re quite right, those angled bits should not be there. (I think they arrived when I tried to move all the components of a wall.) I’ll try to remove them.
I don’t know why wall faces have different colors indicating different orientations. I’ve been ignoring it while hoping it would become clearer to me.
I’m grateful, you’ve helped me a lot, and I really needed it!
That’s possible The thing about geometry in SketchUp is that it is sticky. That’s part of why there are groups and components; to keep geometry separate so it won’t stick to other geometry. Really before you can go much father with your model you need to get a grip on this part of modeling.
Faces in Sketchup have front and back sides. The fronts are shown as white or light gray while the backs are blue. There should be no exposed blue back faces once the model is 3D. Also consider that faces have no thickness. If you need to show both the inside and the outside of walls your walls need to have thickness.
You could think oif it that way. If you only needed to see the outside or the inside of the house you could leave the walls without thickness but it you need both, give the walls thickness. My recommendation would be to give them thickness even if you only care about interiors or exteriors as there are places where a lack of thickness will show.
Push/Pull would be a way to create thick walls however in your model as it is, you might wind up creating more problems for yourself. I would recommend starting over to create the geometry correctly. I would start by drawing the perimeter of the house. Give it thickness to represent the thickness of the floor. Then use Offset to outline the exterior walls. Draw in edges for the interior walls (with thickness) and use Push/Pull to raise the walls to height. Make sure you erase any edges dividing faces that represent contiguous walls before raising the walls up.
