Hi Michael,


A lot of what I design is symmetrical. It's easier to
develop a shape if you can see both sides change at once while
you're shaping mirrored curves. I used to use scale 1D to accomplish
this, but it was more work, so thanks for explaining one of
the uses for History. Now if I can remember, I won't have to use scale 1d
so much. ;-)

I also build a lot of things using a circles that I shape into other forms, because
lofts and sweeps seem to make cleaner surfaces when the number of
control points on the profile curves are the same. When I need to move control points symmetrically but in opposite directions on a closed curve, scale 1d still works well.

Jesse