Hi friend,

re:
> If you scale an uneven curve a "flat" message will appear letting you know it is planar and can be
> used for Boolean and Trim but is there a way to flatten at an angle? I have a wavy surface, created
> a curve on it using surface snap but Trim and Boolean don't work. If I scale on an axis it will ruin
> the shape- I need it to flatten at an angle. Scene included.

There are a few different methods - probably the quickest is to use Transform > Scale > Scale1D. That allows you to choose the direction of scaling so if you pick a direction perpendicular to your desired line in the side view then enter a scale factor of 0 that will do it.

If you want to use the edit frame and "flat" snap you could do that by setting the CPlane to your desired angle.

Also you could rotate your objects so the direction you want is aligned with the world axis directions then use flat snap.

- Michael