Smooth shape transitions in Blender using lofting

modeling - Lofting between two different shapes along a path

Say Goodbye to Keyboard Shortcuts in blender

Blender: Smooth Modifier & Other Techniques – Simply Explained

Using Blender's Curve Pen Tool

Attaching a cylinder to a cube - Blender 3.0

Smooth shape transitions in Blender using lofting

Loft in Blender 2.79

Loft Splines :: Animation Nodes Documentation

Construction Lines gives you Sketchup tools in Blender!

Blender Geometry nodes - Manipulating signed distance fields