To master polygon 3D modeling without a mouse, focus on memorizing and practicing software-specific keyboard shortcuts for core tasks like view navigation, selection, and geometry editing.
Shortcuts replace mouse actions—for example, using W (move), E (rotate), R (scale) in Blender or Maya to precisely adjust vertices, edges, and faces without clicking.
Start with simple exercises (like extruding a cube’s face) using only shortcuts; most software lets you customize keys to fit your workflow, making mastery easier.