Симметрия (symmetry)

Ссылка

Режим (mode):

Texture Paint Mode

Инструмент (tool):

Toolbar ‣ Tool ‣ Symmetry

Зеркало (mirror)

Mirror the brush strokes across the selected local axes. Note that if you want to alter the directions the axes point in, you must rotate the model in Edit Mode and not in Object Mode.