Top Notch threading inserts and tool holder

[urbanrifleman]

Got two new inserts to try and the lay down CarMex you suggested with the CarMex tool holder. The tool holder is a substantial upgrade from the Chinese version.

 

[AlNyhus]

Just an aside....the late Randy Perkowski designed a lot of the threading and cutting tools as an engineer for Kennametal. Randy was a very good BR competitor and won the IBS Hunter National Championship the year it was held in Dublin, Georgia. Randy held several individual patents for tooling that he licensed to Kennametal. He was a good pal and a smart, smart guy with a great sense of humor.

 

[WayneShaw]

I had a long talk with Randy at a IBS meeting years ago, I was using HSS threading tools. He sent me a couple part numbers for carbide tooling, I bought them, and it was a top notch setup. Been using them ever since.

 

[AckleymanII]

I use the Carmex, also. Beautiful threads at 70 rpm, made for Tough stainless threading at low RPM. Also, hard to dull them.

 

[urbanrifleman]

Tried the CarMex. Worked well.

 

[urbanrifleman]

Tried the Kennemetal top notch insert and tool holder.

Yes!!!!!!!!! Wow. Yes.

More to follow. But I like this one the best so far.

 

[PatMiles]

Tag

 

[tclaunch]

The full profile inserts do have a different feel to them. The ER60 is the easy button though. Like FireMedic said, no need for a chicken groove. I'd say these can get close to the shoulder than your upright tool, just due to the width of the tool.

Shop around for the insert. When I got them, you could get them individually on MSC. A 10-pack will last you an entire lifetime. I've yet to wear one out.. and I've cut all kinds of hard stuff with it.

I read this thread and been using Authur Warner for 11 years. I was not looking for better threads but though I'd give the ER60 a run. If I can get them working I will have less maintenence.

 

[skeetlee]

I use Kennametal top notch exclusively. Grade 1025 NTF 2R. Best threading insert I have ever found. I’ll never change!

 

[Jonnyofalltrades]

for you full profile insert guys... compound or straight in?

Straight in. Top profile takes care of chip flow.

 

[gunsandgunsmithing]

As for straight in or use the compound...I do both. I take a big first cut, straight in, but finish with lighter cuts using the compound. More than one way to do this and the end result is what matters. As you get deeper, the cutter has more load. Using the compound lightens the load. Depending on the thread and the cutter, you want some loads, byr feed rate or depth of cut, primarily but the angle the cutter gets fed in has the same effect for the most part. HSS is a different story. Lighter cuts work best for me with hss but ymmv.

I thread a lot of bbls for my tuners, a 7/8-32 thread. Most of the time I get within a couple of thou with a plunge cut and then bring it to dimension with the compound cut. Either way works but I can get it finished, often in three passes this way. Could probably do it in two and maybe even one..but I'm chicken.

 

[jdh47]

16-18 TPI isn't a deep thread so there really isn't much load. I plunge most of the time. Doing something like 4TPI is a deep thread so it does put more load on the tool. Inside threading of Acme threads do better by going on a slope because to bar deflection.
Warner HSS tooling is pretty good for occasional threading. Shops like Jackie's that do a lot use carbide tooling to good advantage. Also CNC machinery can take good advantage of carbide tooling. Truth tell I usually just grind my own HSS bits for threading and do well with that. I do have a couple of AR Warner bits that I've used but I grind my thread bits off center to get close to the shoulder. I also have the carbide setups too. I just prefer doing threading with HSS bits.