Hi Chipp - it's going to be something on the reverse side - filleting tends to not like to have pieces that are part of the same plane, like these here:



So I went to delete those 2 faces to build one single big plane there to see if that would help, and after deleting those pieces there is left a stray edge right between them:



That's actually a really skinny little surface fragment there, that's likely to be what is causing the fillet problem, it's a kind of little teeny shelf or needle sticking upwards from this side here:






That thing is likely to be the source of the fillet trouble in that particular area.

- Michael

Hi Chipp, in the attached 3DM file that little zone shown above has been reworked to cut out that little slivery shelf and now that edge should fillet ok for you.

I trimmed off the sliver with an extended line and then also had to trim the side wall on the opposite side from that so that it was all trued up and that area was one single large plane, this one here:



- Michael

Michael,

I really appreciate you taking the time to explain this. Examples like the one you show are clear and easily reproducible and gives me confidence there is always a solution. Much thanks!

Do you plan on extending the filet tool to where we can have a start and an end radius?

Hi DesertRaven,

> Do you plan on extending the filet tool to where we can have a start and an end radius?

That's already one of the new features that's been implemented for v3, there is a demo of it here:
https://www.youtube.com/watch?v=CemIL-wleOw

- Michael