topic Re: problem with surface quality of G2 patch command in Fusion Design, Validate & Document Forum

topic Re: problem with surface quality of G2 patch command in Fusion Design, Validate & Document Forum https://forums.autodesk.com/t5/fusion-design-validate-document/problem-with-surface-quality-of-g2-patch-command/m-p/5472322#M306775 Hi Claas,   I'm afraid the Patch tool is not going to offer equivalent functionality to Square in Alias. It's creating an n-sided boundary surface (taking an arbitrary set of connected curves and fitting a trimmed four-sided surface to these). It's designed to be super-flexible and tolerant to imperfect inputs, but in doing so it sacrifices some surface control and doesn't optimize for clean four-sided inputs such as this.   For creating something like a Square, Loft should have been the right tool to use. We'll certainly look into why that's failing in this example. You should be able to set adjacent curves as profiles & rails, and set boundary conditions at all of these (assuming the surrounding faces 'agree' with the boundary condition).   We'll also look into the why Alias flagged these as non-continuous. These should be meeting the specified continuity within a tolerance. It's possible that this affected by the STEP translation process. We'll look into whether it matched the expected tolerance and whether this is affected at all by translation.   Many thanks for reporting this one, and let us know if there were any further questions.   Much appreciated, Jake Fri, 16 Jan 2015 15:20:04 GMT jakefowler 2015-01-16T15:20:04Z