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After parts are ejected from a die cast machine, the gates (arrow #1) and overflows (arrow #3 & #4) need to be trimmed manually or by the use of a trim die.

A trim die is used when 1) the gates are very strong and difficult to remove manually; or 2) when the gates are located near the center of the part, such that it may damage the part while breaking the gates manually, as marked by arrows #5 & #6.

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Burrs on ejector marks (flip side of arrow #2) or elsewhere need to be deburred.

After trimming overflows and gates, there might be some materials on the edges that need to be polished away. See arrow #4.

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