Making a curved tube thinner or thicker without scaling its overall size Is there a simple way to change the thickness of a curved tube without scaling its overall size?
E.g. scaling the minor radius of an already created torus without affecting its major radius or change the bevel width of a curve that has already been converted to a mesh.
Yes, in edit mode you can use Alt+S to scale along vertex normals instead of from the median point.

So you can scale this...


To this...


To this...


This also works for bezier curves as well, even without converting to mesh.