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J Bryant
2025-09-03 14:46:07
I was a tad skeptical as I had to drill some holes in hardened D2, this checks out at 58-60 on the Rockwell C scale. Pretty tough stuff. I had broken a good carbide ball end mill as that was what I had on hand. I've always had better results using a flat bottom end mill to drill small holes in hardened tool steel. I Only used one of these end mills (came in a 5 pack) to drill 3 o holes thru 3/16" D2. After use the corners were still sharp and none the worse for wear.
Brian Cain
2025-08-25 20:06:44
Definitely cut good for the price I cannot complain
Paul S.
2025-08-12 14:40:56
Broke one already, probably my fault. Do seem to cut ok once you get going.
Bill D.
2025-07-28 17:29:48
Good deal
Doyle ashley
2025-07-27 15:50:02
Value
Jeff
2025-07-23 18:25:34
I bought these because I broke a drill bit off while drilling out a seized bolt and they cut exceptionally fast I did break a couple of these bits but it was due to using them in a drill and a slight sideways bind not the fault of the end mills just operator error would definitely buy these again
George Medrek
2025-06-22 16:59:12
not worth the money,dont work,maybe for balsa wood
Dominick Bergantino
2025-06-21 13:18:56
For cheap end mills the work fine. The key is slow and steady, and use cutting oil. I broke one flute off the first but after doing 4 key ways. Still works but plung cuts are off. Milling on a drill press isn’t ideal but they work.
J Bryant
2025-05-17 10:06:25
I was a tad skeptical as I had to drill some holes in hardened D2, this checks out at 58-60 on the Rockwell C scale. Pretty tough stuff. I had broken a good carbide ball end mill as that was what I had on hand. I've always had better results using a flat bottom end mill to drill small holes in hardened tool steel. I Only used one of these end mills (came in a 5 pack) to drill 3 o holes thru 3/16" D2. After use the corners were still sharp and none the worse for wear.
Brian Cain
2025-05-02 13:56:16
Definitely cut good for the price I cannot complain
Paul S.
2025-04-19 10:58:36
Broke one already, probably my fault. Do seem to cut ok once you get going.
Bill D.
2025-03-24 18:28:12
Good deal
Doyle ashley
2025-03-21 10:03:09
Value
Jeff
2025-02-20 14:01:20
I bought these because I broke a drill bit off while drilling out a seized bolt and they cut exceptionally fast I did break a couple of these bits but it was due to using them in a drill and a slight sideways bind not the fault of the end mills just operator error would definitely buy these again
George Medrek
2025-02-18 10:32:53
not worth the money,dont work,maybe for balsa wood
Dominick Bergantino
2025-02-13 18:30:18
For cheap end mills the work fine. The key is slow and steady, and use cutting oil. I broke one flute off the first but after doing 4 key ways. Still works but plung cuts are off. Milling on a drill press isn’t ideal but they work.
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