Flipping curved walls when radius changed

[twaldock]

Has anyone else experienced this problem - if so, any suggestions on how to avoid it:

When you have a series of curved walls, mixing concave to convex curves, they become very unstable. Changing the radius of one curved wall can affect another one way down the chain of walls, or it can change all of them. Adding a new wall by fillet arc can do the same thing - the walls can end up being flipped (mirrored) about one face, or they can have their radius changed. This has to be a bug?

Also, if you try changing the radius of one of the arc walls by dragging its midpoint - ie. the blue circle (keep concentric unchecked), it has some dramatic effects on the arc and its two neighbours. I guess that this latter behaviour is as designed but it is really diconcerting and hard to understand what it is doing - it tries to maintain a tangential relationship to adjacent walls.

See attached file for example and workflow.

[aggockel50321]

Try this:

Create your first curved wall using any of the arc tools.

Create the balance of the curved walls by using only the "create an arc by snapping to the end of an existing line (wall).

That seems to solve the constraint issues you're experiencing.

[twaldock]

Thanks for the suggestion, but it does not appear to make a difference which command sequence was used to create the walls. What I have found is that if the walls were created using centre of wall location line, then the bug does not occur, but if the walls were created with an external wall location line then it happens every time.