Circle constrained within circle

[nbawden]

I have a simple block with 2 parallel circles (common center point) with the block insert point being the center of the circles.

I would like to turn it into a dynamic block whereby I can move the inner circle with a move grip on one of the circle's quadrants and with the constraint that the inner circle can't move outside the outer circle at any point (it can touch the outer circle). Can such a block be created? I tried googling but can't find an example discussed in the forum anywhere.

[marco_martinez]

Hi Nathan

Is this what you want, tell me if it´s ok, or give me more information so I can improve it. I send you the dwg too

Good Luck

[nbawden]

Thank you kindly for the effort but I don't need the inner circle to be re-sizable. I am trying to create a block where the inner circle is a fixed size and movable within the limits of the outer circle using a grip in the same place as you have yours. I can't figure out the solution based on my current dynamic block knowledge.

[Libbya · Accepted solution]

Is this what you are after?  

[nbawden]

Awesome - thanks