- For 2-sided top and bottom (the work) must require high gloss. And the two sides parallel to each other, parallel to the lower surface and upper surface of the mold must be high. (For the time being an open assembly.)
- Processing method: Milling milling coarse + fine. For 4 side does not affect erection, should gloss and high degree of parallelism is not required. - Processing method: rough milling.
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