A gate represents the position from where the polymer is injected. It is crucial to the flow pattern inside the mold cavity. A proper placement of the gate can avoid most defects such as air traps, hesitation, unbalanced flow, short shot, and weld line. After gates are located, you can use L/t Indicator to examine if the gates layout is appropriate. The size of the gates remains the same regardless of the change in the diameter of the gate or the size of the model.