Shell Error "The operation could not create a valid result"

Anonymous · ‎10-08-2017

transitioning from Solidworks to Fusion 360.

I'm trying to shell the body shown below.

no matter what thickness I try it fails. Overall I don't see that this shape is too complex. I created lofts, stitched them together to for the body below.

here is a link to the file.

http://a360.co/2y9FOnP

TrippyLighting · ‎10-08-2017

No, this is not a very complicated structure but Fusion 360's shelling code is very sensitive to curvature problems and there is one area in the boat that has a problem.

However, even when that is fixed as shown in the 1'st screencast it's shelling this incredibly slow.

As mentioned in the 1st screencast I believe the lower part of the boat can be lofted in one go and actually would not need 2 different spline, however, if you do I=use 2 spins you need to make sure to use the proper sketch constraints to make sure they transition either tangent (G1) or curvature continuous (G2). This will make a tremendous difference in shelling performance as can be seen in screencast #2.

So in essence "mind your curvature"

https://knowledge.autodesk.com/community/screencast/6b869070-0baf-4b52-9850-b93502c81229

Anonymous · ‎10-08-2017

Peter,

WOW! thank you for the lesson and taking the time to show me in a screencast. The reason I made the bottom in 2 different lofts is because when I first created it the lofting curve didn't follow the actual profile of sketch 14 (which is a straight line, it had a bow to it). I'm taking a 2d hardcopy drawing and converting it to Fusion. thanks for including your file, I will edit my file to see if I can replicate what you did. Regarding constraining the sketches, yes I got lazy because I have't learned completely constraining in Fusion. It is something that I did in Solidworks.

Cheers,

Jay

Community

Shell Error &quot;The operation could not create a valid result&quot;