Scale a 3D beveled bezier path vertex on 1 axis, not 3 I'm trying to create a complex beveled bezier (bezier curve with a spline object as the bevel). It needs to have the same Z+Y scale throughout the object but the X axis needs to scale to widen to fit the letter shape. 

In edit mode with a vertex selected and using Alt+S I can scale the control point and get the scale I want one the X axis ... but ... I am also getting Y/Z scaling. 

Is there a way to lock the axis with this scaling mode or another way for me to scale the way I am looking for? The image show a single control point scaled but I'd want to scale the others to fill the C shape on X without changing the other 2. 

I haven't played with using a Taper object but given how I'm trying to fit a very specific shape, scaling the points would seem to be the best way to have precise scale.
When you scale a control point you're scaling its radius around the curve, which is inherently circular. The only way to get a flat profile is to use a second bevel object with a thin rectangular shape. Once you apply that bevel object, scaling the cp radius only affects width in the way you want.

In my example, I found a better result with a low curve resolution (4-5), and then applying a subdiv modifier with level 3.