Just want to see what kind of surfaces you are looking for. The Quality Control for the model is set to the lowest. You can improve its quality by adjusting the Quality Control slide. Also you can further improve the quality if you could split the surface into several surfaces (I guess no one would make such an effort.) Of course, 0.0002 mm is for g0 position (note "mm"). G1 deviation is set to 0.1 degree. (Of course, it can be set to 0.01 degree by changing one line of code, but we need to consider if it is necessary.)
However, filling/patching is a trivial application for xNURBS. There are numerous operations or scenarios how XNurbs could be used - one UI for all operations. For example,
Multiblending/Lofting with G2 Continuity (5 edges)
Y Lofting with G2 Continuity
Network of Curves
We need some demos to show different operations/applications done by XNurbs. Could you guys provide some examples via our private emails, which could show the use of xNURBS in other operations/scenarios? We won’t share your models with others, and we only need to use your models to generate screenshots similar to the ones above. When we use the screenshots, we will state clearly “Courtesy of XXX”. Thank you in advance.