Here is a Blender 2.81 tip I had to re-learn today.
I started a new mesh and created a string of vertices. After I bit of work, I realized that a curve would be much better. It is pretty straight forward to convert a mesh to a curve, but the curve is little more than then the mesh by another name. What I was looking for was the vector handles to smooth out the corners.
The trick is to convert the new curve spline type to a Bezier curve. The vector handles then appear. Continue reading