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Tim, can you upload the file (after .zip it)? I have never taken the class or seen the book.
If you are using a sweep, I always suggest creating the path first. Then select the path line, and the point at the end (CTRL select to get both of them). Then create a new reference plane, based on those two. It should use the path as a "normal" to the new plane, at the point selected.
Then you can use this plane to sketch your profile. Having a non-coincident profile/plane is a fairly common error, and the above method makes that impossible.
The other possibility for sweeps that fail, is that the sweep intersects with itself. Make sure that your sweep always has a very generous curvature in the path.
Yes, I get that same error.
You can avoid the error if you don't make the path into a spline. Or if you change the tolerance when making the path fit spline to 0.001 mm or something like that.
It looks like its failing around the corners.
Best of luck.
Thanks guys. Changing the tolerance to .001mm did the trick. That's the one thing I didn't fool with when creating the sweep.
This is one area I'm frustrated with SW. It really needs to indicate better why a failure is happening. Glad this forum is here for help!