Issue with circle in loop tools

[dsp_418]

I'm trying to convert a selection of vertex or edges to a circle. I thought I could use loop tools, but either is not working or I didn't understand how it works.

Attached two screengrabs on a sphere and a cube:

 

Same operation with Blender's loop tools:

[CliveG]

I may be way off track here, but is it not just the "Spherify" modifier you need.

 

Select the poly's you want in the sub-object mode and apply the Spherify modifier.

[dsp_418]

Thanks!

It seems to work. I wasn't expecting it was gonna work though as I though that a polygon related command was the natural way to go.

At this point I'm wondering what the circle loop tools command is meant for (in the online help it seems related to what I was struggling with).

By the way, using the spherify modifier means that I've to collapse it every time I use it as otherwise it seems to give unpredictable results whenever I keep going with the modeling process.