CAD Forum

3-face fillets are cool. They can yield a great-looking smooth edge with minimal effort when they work right.

However, I find that often the resulting surface of a 3-face fillet is very "heavy", with dense pole structure and slow regen times. Also, these surfaces can be prone to corruption further downstream. I've had to abandon and restructure 3-face fillets more than once.

I've observed similar behavior in SW, Creo, and NX.

What say you, good people of CADForum?

.. I've rarely ever used them and similarly their convergent/divergent behavior and look does not play well downstream and beyond (STEP files)

I've used them a few times, but not much. Some other technique always seems to fit the need better.

Rarely use it, most times I use the standard fillet or I would focus on the sketch/surface

Once in a while I will use a temporary 3-face fillet to establish ideal silhouette edge to make a pair of tangent fillets.