- Process punch is needed before forming, countersink hole’s depth is adjusted by regulating precess punch hole’s diameter.
- The countersink molding insert corresponds exclusively to the thickness of the panel. It is not allowed to process panels of different thickness.
- The material around the countersink hole will be extruded after molding and slight distortion will appear.
- It needs special insert design for molding of a bigger plane extrusion and special extrusion.
- Min sheet thickness of Countersink process must bigger than 1.0mm（t≥1.0mm.
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