Hello,

I'm very new in MOI 3D. When I try to fillet a line, it shows calculating and nothings happen. Does someone know why is the reason for that?
I have attached the screenshot and working file. Thank you!

Hi Jade, it looks like you've accidentally attached an .mtl file which is the materials file from an .obj export. Can you please post the .3dm file?

Thanks, - Michael

Hi Michael,

I've attached the 3dm file. Thank you!

Hi Jade, I built what I think is a replica of your object based on your screenshot and I am able to repeat the no-fillet over here too.

If you separate out the 2 top faces there then do the fillet on the edge between just those pieces it should probably work. That then shows what the problem is with the original - trying to put in a fillet on that spot is going to open up a hole on those side areas like this:





The filleter in the geometry library that MoI uses can usually deal with an opening like that if the "side wall" is just one single surface, but it isn't able to deal with it when it is made up of multiple faces.

So for this case you'd probably need to construct it differently, like an extrude:



Then boolean difference using a filleted polyline as the cutting object:



That will divide it into 2 pieces and then you discard the top one:



If you wanted the edges for the sides to also be filleted you would probably do that on the base curve before doing the extrusion, or it should also work on the extrusion before doing the side cut.

- Michael

The other thing that would work ok is if more of the edges were being filleted like this:



That then has the fillets stop before they collide into each other and a corner juncture patch is put in:



- Michael

Thank you, Michael! I'm now have a better concept of fillet in MOI!