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Insert’s cutting edge geometry directly affects stability, tool life, and chip evacuation.
NC Helix Drill insert with special serrate design, the minimum Ae is 1/3 insert length in general. However, by using Zigzag program, due to the high ramping angle, the Ae could be only 1/4 insert length.
Check the video:
Holder: 99321-010-1320,
Insert: N9MX04T002-NC5075
NC Helix Drill cuts workpiece from solid to a pocket, then the last process is to leave the pocket with only 1.18mm wall.
More information:
https://nine9.jic-tools.com.tw/nc-helix-drill.htm
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