To make good plastic mold and meet our cusotmers required we have tight quality control procedures, even thought still not perfection but we are learning from our cusotmers feed back and improve it from time to time, our cusotmer will be satisfied by doing those quality control systems.
General steps including below.
Tool drawing Design review before sending out to customer
Tool drawing version updated in time to insute customer will have lastest version when sending out document with mold
Design validation and verification
Incoming inspection for all of row material
First mold trial Inspection
Dimension adjustment inspection before next mold trial
Coordinate Measuring Machine (CMM)