Mark, your socket still appears to have rough edges, as if the objects need 4X or 8X as many vertices as they have now. But I assume that, in another window, the edges must appear smooth.

Yes, that is correct Miss Nancy. Like the warning says (shown in the dialog box in the image above) changes in fidelity will not update in the Blubble window - only back in the Assembly Room.

Very interesting. Thanks much. I did try to change the Mesh Mode of two new spheres that I added. But when I did that, the whole model re-arranged itself. I am assuming that once you start at a give fidelity you have to stay with it?

It is universal vs. per-instance... Anytime you start subtracting shapes, a greater fidelity will be required. Low fidelities work ok when everything is additive but not once things start getting subtracted.

This is confusing. I'm going to state what I think I'm reading plus my own experience. 1.) It makes no difference when you change the Fidelity (after you've started, before you started, when you're done). Changing the fidelity will not be reflected in the modeling room but will change the model result in the assembly room, rendering, etc. 2.) If you're only putting "add" metaballs into the model, lower fidelity settings will work fine. If you need to use "subtract" metaballs, you will probably have to turn up the fidelity. -Kix

BUT... why does one have to go to extremes like 400% to get the quality you should get at 100%? That's what bugs me...