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How to read a drilling mold
For a proper method of drilling, the drill mold is important. A drill mold gives a drilling instruction to the supplier.
How do you read a drill mold?
For example L4-7-6-80 means:
|Position left of the book
|Number of holes
|Diameter of the drilling in mm
|Distance between the leaf edge and beginning of the drilling
|Distance between the drilling centers