фотки в студию интересно жуть
еще как вариант винтовой насос по типу мясорубки ну это образно
маленький шестиренчатый насос😵+шаговый двигатель решение проблемы
за воздух даже не думай остаточное давление будет делать кляксы
у иглы внутри спираль получается смешиватель гравитационный
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