You are correct.kisolre wrote: ↑Mon Mar 04, 2019 6:19 pmYou again forget that the fact that two points have the same coordinates does not mean that they are "COINCIDENT"ly constrained. The leftmost three centers of the inner and outer arcs are at he came spot but are not COICIDENTaly constrained. That is why you need several thickness dimensions. Box select the two centers (drag a square over them) and apply COINCIDENT constraint - the one in the first post of page 3 of the thread.
You are correct.
Those tangent constraints are all there.openBrain wrote: ↑Mon Mar 04, 2019 8:41 pmJust for improvement, your design seems suboptimal.
There are a lot of tangency constraints missing where arcs join lines.
Also I guess I see tangency constraints on the arc centers, which seems quite unusual.
Last clue is that if your part in constant-thick, you shouldn't have to repeat the thickness and arc diameters.
If you could post your file, ones here may propose more optimal ways.
EDIT : maybe the 2 first statements in italic are a display effect...
That is an elegant solution! I'm going to have to remember, and practice your method.openBrain wrote: ↑Mon Mar 04, 2019 9:36 pmAttached my proposal.
As said, most "problems" come from missing coincidences between the arc centers.
From my PoV, it is cleaner now because :
* There are remaining only 1 overall dimension and 1 offset dimension on each axis
* Thickness is defined only once
* Radius of "plies" is defined only once
* There are lot less "equality" constraints (that was strange that you had to set equalities between inner & outer lines / inner & outer arcs)
It could be discussed whether equality constraint #53 should be replaced by a point-on-line constraint between the top right point and the Y axis.