Maximum edge gap bug?

Note that these aren't flagged as errors. They're just telling you that the system could only resolve the locations of the vertices and edges within 5 nanometers. Most of us don't have to worry much about nanoscale geometry.

I don't have any older versions installed, but I suspect that you would have seen the same reports from all earlier versions. It could be that the older versions just didn't bother to show a value when it was below some threshold, but I'm sure they weren't any better at determining the locations than SW04 is.

SW does have problems sometimes with not being able to locate vertices accurately enough, but I don't think you will find it with simple extruded boxes. It's the other geometry, particularly lofts and sweeps and their like, that usually cause the problems.

My experience has been that Pro/E doesn't worry about tolerances as much as SW, so it was more of a pain going from Pro/E to SW than it was from SW to Pro/E, but I don't have all that much experience going either way.

Jerry Steiger Tripod Data Systems "take the garbage out, dear"

Thank you, that does explain it

Not long after I posted, I restarted SW to reduce my memory usage and the tip told me that Sketch accuracy is 1*10^-6 m and feature accuracy is

1*10^-8 m. That fits in nicely with the gaps that SW reports. It's not very clear to me how the features can be more accurate than the sketches, though!

Jerry Steiger Tripod Data Systems "take the garbage out, dear"