Help Solving Boolean Difference

[ajarindia (BVR)]

And don’t duplicate thread.

I need some help. Can you give me a hand?

[image] Hello, I am a Trial user of Rhino, and a student. I was making a model for project, but there is a problem. Can anyone solve the problem? I want to do boolean difference a layer from the big part, and error occurs… I uploaded Screenshot and 3dm file… thx