Firstly I would like to say, Flow , is great it had no trouble placing the fleurs on this ring. :)







now to the problem, this ring was made from a profile and sweep+rail (instead of Revolve + rail) (don't know if that makes a difference?)

I can apply a .2 fillet to both "top" edges has shown, but it will not apply the same 0.2 fillet to the bottom edges, I can not see any differences in the edges.

Cheers, Steve

Try to set the fillet to constant distance..

Peace,
Rich_Art. ;-)

Hmmm, contant Distance worked for the edges that would not fillet with circular. , Thanks Rich_Art.

Can someone please explain why edges are different?

Hi steve..quick trick: fillet your profile(select outern corners,fillet=0,2mm) before sweep

LoL yeah that is a nice trick indeed. :-)

Peace,
Rich_Art. ;-)

>LoL yeah that is a nice trick indeed.
..life is made also by tricks..shortcuts...compromises...(especially if you are married)..


i also found few times this kind of problem,someone,in the past,suggested to use Autodesk123 to hard filleting operations
i'm just an end-user,let Michael explain Moi behaviors (Solid libraries..?)

Hi M-dynamics, yes filleting the profile is a good idea. :)
The only thing that caught me out on this model, was the wife changing her mind on how she wanted the edges :)

Thanks All

Hi steve - so for a completely round cylinder like shape like that it is better to use Revolve to construct it rather than sweeping around a circle path.

Revolve makes extremely precise geometry - Sweep on the other hand goes through a kind of refinement fitting process and on closed shapes it has a tendency I think to have the closing point of the sweep surface to be slightly off from tangent by like 1 or 2 degrees - and that kind of slight shallow tangent deviation tends to be one of the things that the filleter does not like to deal with, so that's most likely what you are running into here.

If you would instead have constructed this one with revolve you would not likely run into the same problem.

The revolve is not only more precise for a shape like that but also has a lighter surface control point count as well.

- Michael

Incidentally, building the fillet in to the curve before revolving is one way. But if you work in a parametric CAD system, like Solidworks, you are taught not to do that. If the fillet is a separate feature, it is easier to go back and amend it, rather than change the base sketch. Not so relevant for MoI but worth noting.

Thanks All

I will retry with a Revolve, thanks for taking the time to explain.

So far it's been a real it's been a real pleasure working with MoI and posting/reading on this forum.

Cheers, Steve