Thanks a lot Michael, but could you pls clear this untrimming process up a bit more for me? I try to get rid of those edges and they're just won't be deleted. What am I doing wrong?

"You might try importing it into a different CAD program which has a more robust fillet engine like ViaCAD or OnShape."


I also had similar problem but also often running in some fillet issues mostly not wanting to
fillet at all not because of bad model but the fillet just don't want to do it's thing + it can be very slow.

When i saw how fillet works in Fusion360, it's just unbelievable what it can handle like "t-sections" or self intersections to name some.

I really hope that Fillet is on the priority list of Moi3D v4.0 - to make it way more robust and fast as possible.

Hi Defonten,

> Thanks a lot Michael, but could you pls clear this untrimming process up a bit more for me? I try to
> get rid of those edges and they're just won't be deleted. What am I doing wrong?

You're probably selecting just one edge and hitting delete - instead you have to select an entire trimming boundary and then push delete. A quick way to select the entire boundary is to select one edge and then use Ctrl+A for select all.

If you have a version of this file with your original curves in them you used to boolean against you can just copy/paste that over instead of doing the untrim.

- Michael