Fast and individual line portal as a basis for a self-built bartender / cocktail maker. By pressing a button the cocktail is mixed. The Y-axis is based on 2 spindles with a stepper motor to achieve the highest possible precision and yet move quickly. The Z-axis is used to push up the doser to get the exact amount of liquid. A high value is also placed on high precision. Y/Z slides run on drylin bearings.