Printing preference determines whether a printer chooses a single or a composite blade. Try the different squeegee blades and see if the high-tech ones are better suited to your printing style.
Square (also called Straight Edge): The square-edge squeegee blade is most often used by screen printers. It works well for standard or regular ink applications.
Round (or ball nose): The round shape of the blade passes more ink through the screen and is often used for printing gel or puff inks. The round blade also is used by screen printers who want a heavy deposit when printing special-effects inks.
V-Shaped (single or double-bevel): This profile is often used for printing on irregular or cylindrical-shaped substrates.