Thread: 4.3 mm holes, 20 mm deep
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08-08-2017 #25
Last Activity: 3 Weeks Ago
Hi Chaz,
If it helps - in the line boring video I posted recently you can see 3 mm holes being peck drilled (with full retract to clear the chip) at ~12,000 rpm. Can't remember the feed - maybe 300 mm/min? Drill bit is plain HSS.
You can see the chip fly out each time, and a dab of oil keeps it running smoothly. Starts at 0:32
https://www.youtube.com/watch?v=sYhDtuqzf2I&t=6s
Been using this method for some time and it works well.Last edited by routercnc; 08-08-2017 at 06:52 AM.
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