No Intersection Points

[[Da...]]

This model has several radii making up the "flower" feature. I need to create intersection points where each radius meets the next one. But when I try to do an intersection of two neighboring radii, it says no intersection points. I tried going into the features and extending them so that the lines would cross, and they certainly look like they would intersect. The features are at the same Z depth. Is there a better way to do it? I do not have Curve. 

[[Du...]]

Have you tried a tangent point?

[[Je...]]

Best way to do this I guess, is, to create a 3d-line by recall the middle point of the two circles, intersect the line with both circles (each one should be the intersection point of the two circles theoretically, but in reality they are just near at) and create a symmetry between the intersections, that should give a relatively stable result

[[Sv...]]

What also works is to measure the radii as a cylinder and then make an intersection point and activate the box mantle for both cylinders

[[Ri...]]

Most of the time when I run into this situation, the model itself is not intersecting or tangent to each feature.

[[To...]]

Jens is on-target

[[Da...]]

Jens, that worked...thank you!!

[[Pa...]]

When I've had this issue I ignore it during offline programming.  In all cases the problem has been with the model but the real piece calculates intersections just fine.

Next time, however, I'm going to do as Jens suggests.  Good idea!

[[Ri...]]

Tangent or use Kink Point with Curve. 

[[Ky...]]

I see this sort of thing fairly regularly and Jen's is probably the best answer (short of changing this into a profile anyway).

 

The reason you can't do an intersection, as Dustin alluded to is that the circles aren't intersecting, they are tangent to each other, i.e., they only touch at one point theoretically. In reality you are always going to be in a situation where they are intersecting at 2 discrete points (in which case you would have to figure out which one you want), or don't intersect at all (in which case you aren't going to get an answer) depending on the exact form. The tangent construction won't work normally because it is supposed to give you a line defined as tangent to 2 circles or a circle tangent to 2 lines (it might work here, but you would need two and intersect them anyway and it still might not really be the answer you need).

 

As Jen said, I would usually do a 3D line between the centers of the two circles and then intersect them with the circles themselves. In the real world you will get slightly (ideally at least) different answers depending which circle you choose, but the difference can give you an idea of how bad the form is. A similar application is a line blending into a circle, in which case usually I recommend a perpendicular construction between the circle and the line. You again get two answers depending on what you intersect the perpendicular with, but it is the best option you have for this.