[sgtlethargic]

Okay, I've found the sweep function and I could use some help figuring it out. I've got two concentric circles and I'm trying to create the spine, but it's not working for me. I want to start from the center of the circles and sweep 90 degrees on a radius. I created a workplane that's 90* to the circles' workplane.

Here's the idea of what I'm trying to do, except more accurately drawn and not done the hard way.

Thanks,
Kurt