Parting line

A parting line in moldmaking is the place where two or more parts of the mold meet. At times, either because the mold halves do not meet with enough precision or because injection pressure is high, material will creep into the space between the molds. This material is generally called molding flash or simply flashing. At times the parting line can be seen on cheaper toys and other items as a raised line around the product.


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