Ok, I understand the self intesection problem and the meshing trouble.
But here's an other example :



For an unknow reason, filleting the last bottom edge of this model make some surface dissapear ... however, the object type panel is still showing this as a solid :S

Of course here I have a good visual feedback and I can fix it, but sometimes this kind of missing surfaces appends in some tiny fillet area, and I only see it after the mesh export (flipped normals) ...

Boy, PAQ, you certainly get the maximum value out of MOI - all of your models are HOTT! ;-)

I was getting this previously but had pegged it down to geometry that I had >mirrored< that would cause things to disappear.

Michael, (hopefully) fixed that for us with that quick patch he put out.

If you didn't mirror the piece that's causing the disapperance, then it must be something else that causes a similar kind of error within the model?

-Will

Hi PaQ, can you possibly send me that model so I can repeat the problem over here?

It looks like you probably got a "disjoint brep" in that situation there, which is a brep made up of more than one boundary skin but still defines a solid volume in separate pockets.

I would guess that if you save that to a file and re-open it that it will end up broken up into different pieces like you would more expect.

Normally there are some volume separation type steps for commands that could otherwise easily create this kind of a thing such as Join or booleans, it looks like I need to add that processing to filleting as well.

So really that looks like a tuneup needed for Fillet actually. If you can possibly send me the pre-filleted shape over here so I can repeat the Fillet and see the problem happen that would make it easier for me to fix it up.

- Michael

Hi WillBellJr, thanks for your comments :o) (my MoI was allready patched for the mirror bug)

Looks like it's a fillet bug finally ;) (confirmed by Michael)

Here's an update of the robot, looks like I don't match the 50's spirit very well :S (that's why I probably like it hehe)

Cool robot! Assimov can sleep in peace ;)