I've learned that if I have a round pocket and I choose the "Advanced Pocket" pattern and check "Adaptive Roughing", it will do a spiral (Mill 2-axis).
Here's exactly what I'm trying to do:
First drill a 3.5" hole. Then use a 1" end mill to drop into the hole and open it up to a 5" diameter.
I would choose "mill 2-axis"-->"Profile" and use the 5" diameter circle as my geometry, but I don't think there's a way to spiral when doing a "profile".
I think it has to be a "pocket", but it will start in the middle and sit there cutting air for a while. To eliminate this, I would select both the 5" circle, and the 3.5" circle as my geometry so that I will actually be in material. I would try to make the start point in the middle of the circle so that it will drop down where I have already drilled.
But the problem is that my 1" end mill doesn't fit inside the geometry, so BobCAD won't let me do it.
I have also noticed that when doing "Adaptive Roughing", it completely ignores what I select as a start point.
Being able to spiral is really really nice, but it seems inflexible.