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Plastic injection is a very efficient and highly accurate method of mass-producing model kits. However the process is not perfect, and some physical flaws can still appear on the surface of some parts. The most common flaws we might find are mold lines, flash and sink marks. These surface defects are easy to address and doing so will be well worth the time spent fixing them before painting your model. In this guide, we'll go over each type of defect and discuss a solution.
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