The curved shoulder body on top of the cylinder has no thickness (it is a surface). I would like it to be 0.1875 (3/16") thick with the surface now shown to be the upper surface and the resulting thickened surface to be down, more inside the existing shape. Extrude and pull just seem to move the surface the offset amount, leaving it with zero thickness. How can I thicken the top revolved surface? Model attached. Thx.
Use Thicken (Surface tab -> Create).
But I'd recommend making the complete design as a surface and adding thickness at the end (or makes it as a Solid and use Shell at the end)
This avoids the possibility of faces not aligning or other strange geometry.
EDIT: Added file on possible workflow. Changed your sketch, removed construction lines and added a tangent constrain between top spline and side.
Do you really want no tangency here?
And do you really need so many spline fit points ror that simple shape?
