I suppose the curves are the problem.
Tolerance is 0.001 in mm.
Not able to help if you don’t post a file with internalized geometry.
Increase your document tolerance or use some other way to make the curves join. Just looking at the image you’re extruding 5 curves into 5 surfaces, you can’t cap that.
If your curves are not planar then for example you can try getting control points from the curves, fitting a plane on the points and projecting your closed curve on that plane.
hi, leave he tolerance as it is. join your curves before extruding them and make sure they are planar.
Thank you all for giving me advice!
I did some adjustments to align the points perfectly to build a curve and got it figured out at least.
It was just a Rhino drawing issue.