Intersect Faces Issue

SketchUp for Web
1

As shown in the images below:

  • I created a cat’s head shape and used the push/pull tool
  • I then positioned it on a tapered cylinder
  • I then used “Intersect Faces”
  • As you can see, there is an issue - some faces are missing

IntersectFaces%20001
IntersectFaces%200011217×905 60.9 KB

IntersectFaces%20002
IntersectFaces%200021321×845 64 KB

I know I can repair the cat’s head by drawing appropriate lines, but I was wondering what caused the problem in the first place.

Intersect Faces Issue.skp (298.5 KB)

Cheers

Mark

2

It’s because of the small size of your model. SketchUp won’t create the required tiny faces. They can exist but you have to create them at a larger size.

Screenshot%20-%203_15_2019%20%2C%2011_33_40%20AM

That gap is about the width of a human hair. Other gaps are smaller. I think you’re cat head is excessively over modeled.

Try scaling it up by a factor of 100 or 1000. Or use The Dave Method.

2 Likes
3

Thanks, DaveR.

I tried the Dave Method and it worked a treat.

When you say that the cat’s head is excessively over modeled, I presume you’re referring to the number of segments.

I created the head using the following steps:

  • used Trace Bitmap in Inkscape trace a png image
  • saved as a DXF
  • imported DXF into Make
  • saved, then inserted the SKP into a model in SketchUp Free

I’ll try reducing the number of segments.

Cheers

Mark