I need to drill a couple of holes size .125, so I have a .125 high speed drill. I am wondering what revs you would usually use? What speeds? Etc. I already had some drills break in the past, so I do not want to make the same mistake and want feedback. Thanks y'all!
Follow along with the video below to see how to install our site as a web app on your home screen.
Note: This feature may not be available in some browsers.
Largest Manufacturing Technology Community on the Web
Stay Connected:
MACHINING WITH A .125 DRILL
- Thread starter PMAF
- Start date
- Replies 9
- Views 632
mhajicek
Diamond
- Joined
- May 11, 2017
- Location
- Maple Grove, MN, USA
What material, in what condition? How deep? Got flood coolant at least?
It is regular stainless 304 and 316. Thru hole 1.600". And yes I do.
Thanks for responding by the way.
Pecking ?
crossthread82
Hot Rolled
- Joined
- Apr 1, 2022
- Location
- Maryland
At 13xD you would have to be pecking with a HSS drill. What kind of HSS drill? Jobber? Aircraft? Parabolic? Is it coated?
If its a jobber drill I'd turn it around 35-50sfm and feed it about .0012-.0018ipr pecking every .060" or so.
Oh and you absolutely need to spot and then pilot drill the top of the hole with a stub drill to get it started.
Pete Deal
Titanium
- Joined
- Apr 10, 2007
- Location
- Morgantown, WV
FS Wizard says .0008” per tooth feed rate, 750 rpm (25.5 ft/min). For a standard hss drill.
Drilling Speed and Feed Calculator
Free Speed and Feed Calculator. Calculates the speed and feed and cut time for drilling.
www.custompartnet.com
Pffft You can't read minds? lol
mhajicek
Diamond
- Joined
- May 11, 2017
- Location
- Maple Grove, MN, USA
Working on it, but not quite there yet. I've been spending my skill points on other things.
