fillet behavior on a curve

[syltrand]

On a flat curving surface, when I make a fillet the size I need, (in this example, 50mm), it leaves a sharp feature in the fillet.  This feature disapears when I make the fillet large enough.

How do I get a fillet that won't leave a sharp feature, and is the correct size?

edges to filletshowing undesired featuresshowing desired result (how do I get it to look like this, with the smaller fillet)

[etfrench]

Hard to say without the file. My first guess would be the outer circle isn't tangent to the center circle.

[TheCADWhisperer]

@syltrand 

Can you File>Export your *.f3d file to your local drive and then Attach it here to a Reply?

[syltrand]

Here's the file.  Still not sure what's causing this.

(didn't expect a quick reply, so, thanks!)

[TheCADWhisperer · Accepted solution]

@syltrand 

See Attached.

Edit the fillet size and also add to the bottom.

[syltrand]

Building the part your way works I guess.   I'll still see cursed fillets in my dreams though, hahaha.

[etfrench · Accepted solution]

It appears that splines behave differently than arcs:

[TrippyLighting]

Yep, that "behavior" has been part of discussions a long time ago!

I consider that a bug, as other CAD systems do not behave this way.

@Phil.E 

[Phil.E · Accepted solution]

You got it. FUS-186537