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2016年2月23日星期二
The use of ribs is a practical way for mold
If there was only one rule for the MASTER injection mould process it would have to be to maintain uniform wall thickness. Many times the stiffness of a part must increase because of the load applied to the MASTER injection mould design. One of the easiest ways to cure this problem is change the part geometry by adding ribs. The use of ribs is a practical way and economical means of increasing the structural strength of a part. But there are guidelines that govern adding ribs without causing sink marks or surface blemishes to your parts.
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回复删除19th century billiard balls were originally made out of ivory, obtained from the tusks extracted from elephants. Celluloid was one among the primary plastics wont to manufacture billiard balls.
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