The videos you see online of these bars are the real thing. I've had the same experience in my shop. Just today we machined some parts with a bore 5.5" deep. We used a 3/4" boring bar with a 5.75 stickout. Didn't even change the finishing feeds and speeds from what we would normally run. Roughed and finished with the same bar. It actually broke a chip too! We're willing to do parts that we would have avoided before.
We were struggling to get good finishes and tool life in a bronze alloy recently. We had been using a comparable DCGT insert from a reputable company with very little success. We could only get one or two parts before having to rotate the insert to a new edge. We were also running recommended speeds and feeds from this other vendor. Octane suggested we try these Arno inserts for non-ferrous. We were skeptical at first as the Arno inserts looked almost identical to the other brand we were using, but the grind and the edge on the insert was much sharper than the other brand. The coating was also more even and the packaging was excellent. We made no speed and feed adjustments from what was being used with the other brand and we were able to get 10 pieces per edge in this bronze material. The edge held up and after those 10 pieces had some signs of wear, but it was very minimal. I would have no issues running the Arno brand of inserts again and plan to use them more as we machine more of these bronze components. My only complaint would be having to buy a package of 10, it would be nice to have the option to only get 5, especially if you needed them for a one off job.
I installed this in my CNC Mill and the clean up is so much easier!!!
I would recommend this for anyone that has a milling machine.
Put these on my 2007 Hurco three years ago and they’re still holding up great. I have done almost no maintenance on them other than cleaning the slots and using LP3 when I remove them for workholding. That means almost the entire time they’ve just been sitting in place.
Would happily buy them again. Thanks!
I have a small shop in Corona, California called IngeniumPRM. We got a rush job to make thrust chambers out of 6AL4V and had to bore a hole 10 inches deep inside of it. Everyone was super helpful getting me the tooling I needed, and this bar blew me away at what it could do. Zero harmonics, a mirror-like finish, even tool life was manageable. And if that isn't enough, the price is half what you would pay for a Sandvik or Kennametal variant. I 100% recommend this bar for any deep boring you need to achieve, and will definitely be going to them again for critical tooling needs.
