Hi Kevin, I'm not sure if a change in topology would make much difference in this case, since it's one smooth shape there is not really any obvious topology changes to make unless you would change the shape to be made of line segments and arcs or something like that rather than 1 smooth curve. But then that would be a different model...

- Michael

Hi Burr,

> Maybe Parasolids needs to see this example to incorporate...LOL

I wouldn't be surprised if they would incorporate it at some point actually... It seems that they are recognizing that the regular fillet would self-intersect and at least trying to do something about it.

It actually tends to be better to get a result back even with those little ripples in it rather than nothing at all because then you may be able to do some surgery on it to trim out the bad part and fill it in with something else.


One of the more interesting parts of this is not really so much that MoI's filleter can generate this case better (which is going to be a rather rare occurrence), but rather that you can actually see the little ripples with MoI's regular display rather than having to go to a special analysis mode or possibly not even being able to see it at all in some programs even in analysis modes.

- Michael

Ah yes. The other program presents to you a fillet that "appears" to be very nice. (Unless analyzed)

I find MoI to be very good at inspecting geometry! (hence my V3 wishlist request for sectioning) It really is powerful in this sense.

Here`s some samples from CoCreate, ProE and SolidEdge ST1






















Will checking also the IronCAD LATER.

Thanks,

d3

Hi Michael,

After having a bit of time doing this it seems NX struggles a bit also, it does manage R=3 with Edge blend and Face Blend before the surface gets funky when you go over R=3, the Soft Blend option is at R=4, had no time to analyse the results, so I've attached a .3dm with all three, they are all named according to what method was used to fillet.

Cheers

Hi Danny, the edge blend and face blend ones (the 2 on the left) are interesting - it kind of looks like it switched to a sort of rail-revolve type generation in that area. Those are nice on the interior portion of the revolve but has a kind of bump or lack of continuity where the corner patch touches the fillet. You can see it clearly if you turn on metallic lighting in MoI and hide the edges:






The soft blend one seems pretty good though, maybe just tiny subtle hint of a lump in one spot. The control points on it are clustered in some areas but it doesn't seem to suffered much for it at least in this particular case:



- Michael

Here`s IronCad 1,7 mm round. R1,75mm didn`t work for basic round.


Thanks,

d3