> But how the heck do I spiral a curve upwards? :)

Here's one method using control point editing:
http://moi3d.com/forum/messages.php?webtag=MOI&msg=80.1&search_string=spring

Eventually there will be a specific spiral tool to make this a lot easier, but I'm not exactly sure when it will be available, maybe not for v1...

After you have created your sprial, draw a circle and make sure that the circle is not inside the bounding box of the spiral, in other word - move it away from the sprial. Now select the circle and do a sweep, and MoI will automatically place the circle perpendicular to the spiral for the sweep. Let me know if this part needs more explanation.

> p.s Great interface, Michael! ...and awesome fillets! :)

Thanks!

- Michael