From: Moi3dFan
I realize that fillet is a rather capricious command, but why can't I make a fillet of a straight segment and a curve?
And a straight line and a straight line form a fillet perfectly.
Video in GD:
https://drive.google.com/file/d/1C7a1JcG62CTmd6q2b-JVkcXVMaEyPrl0/view?usp=sharing
From: pressure (PEER)
Hi Moi3dFan,
I had the same question a while ago, but after playing around with it I realized that this is a fact of geometry rather than a software limitation. It's not possible in general to draw a circular arc tangent to any 2 curves that aren't in a plane. You can try this out with "Draw curve" > Arc > Tan and you'll find that in many cases there's just no way to do it.
The curve that you're ending up with there at the end is not a circular arc.
But, to do this kind of thing you can trim the curves away from the corner a bit, select them both, and then do Construct > Blend.
- Peer
From: Michael Gibson
Hi Moi3dFan, just to reiterate what Peer writes above,
re:
> but why can't I make a fillet of a straight segment and a curve?
It's because those segments are not on a single shared plane.
> And a straight line and a straight line form a fillet perfectly.
The 2 straight lines are coplanar so that's why that one works.
Basically, the job of curve fillet is to generate an exact circular arc, which is a planar curve. So it's generally required that all 3 pieces - both input curves and the arc - need to all be on one common plane.
The result you show from solids filleting is not an exact circular arc because it comes from a diagonal cut of the fillet surface.
- Michael
