Sphere on a Point in Space

[Anonymous]

I've attached three views of a current model. Sphere-01 shows four positions.  A, B,C and D.  D is a cylinder that is perfectly aligned between divots A, B and C.  I want to create a forth divot where the cylinder is located.

Using the three center points of each divot, I was able to create a sketch plane that allowed me to extrude the cylinder to create an axis.  My intention was to snap to the intersect of the blue and green lines.  Sphere-03 is front view and shows the "X" marks the spot. However, to create a matching divot depth and width, I must have the sphere's center on the "X". 

Sphere-02 is a top view for reference. When I select the sphere, Fusion asks me to create a sketch plane.  But as you can see, where I want to add the sphere is not planar.  I was thinking I could find the intersection of both lines, snap the sphere and I'm done.  Not the case.

So...  How do I can this very critical sphere placement?  I can't imagine it being as hard as I'm making it?

Sphere-01

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[TMC.Engineering]

Can you share your model?  would be easier for me to understand if I can rotate and look at it.  I think you are after something like this.

[Anonymous]

@TMC.Engineering - Yes, what you show is exactly what I'm trying to do.  But there are certain aspects of the model that I must control so placement of the sphere for the divot is critical.  I've attached my model for you to review.

I'm curious what you come up with because you seem to have done exactly what I'm trying to accomplish.

[Anonymous]

@TMC.Engineering - Well, it was as easy as I thought it would be.  I forgot all I needed to do was pre-select the sketch plane I created earlier and rotated.  When I clicked on that plane, I was able to put the sphere at the intersection I needed.  Very simple. I just had to forget what I know from other 3D software.

Thank you for taking the time and interest to help.  

Cheers!

[TMC.Engineering · Accepted solution]

Don't for get to modify dimensions to make sure all the features update as expected.

Attached is my file.  and a screen cast

[Anonymous]

@TMC.Engineering - Wow!  This is amazing.  You took an entirely different approach than I did. But you've shown me how to take better advantage of the sketch tool and parametric capabilities of Fusion 360.  Great stuff!  

I'm going to study this video and give it a try.  Very interesting. And thank you so much for sharing.