Compound Cycle Tapping on Okuma Lathe
April 27, 2012, 11:56 am by Eldar Gerfanov (Admin)
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Tapping Hardox Rc 45-50
February 27, 2012, 9:43 pm by Eldar Gerfanov (Admin)
A need arouse to drill and tap lots of blind 1/4-20 holes in 3/4" thick hardox 45-50RC hard plate.
So if you ever need to do this use:
1) DRILL
Tap hole: >0.202" or bigger. 5/8 deep.
Drill used: Tialn coated carbide drill.
S=1418 RPM
F=2.6 IPM
NO Peck, No Coolant
2)TAP
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