When processing a surface of the mold, there are two issues that IT person of note:
- First, it is the accuracy of the geometry of the surface without being the undulating too large, the undulating often been left by the previous material.
- second, surface finished products must not contain scratches, stains hole, surface layer peeling, pitting, ... finished surfaces often a kind of inevitable defects that are "snake eyes", with thin sheets, the product defects are easily observed but the product is not the naked eye plate is hardly recognizable .
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