Author Topic: Carbide Inserts  (Read 431 times)

Offline doubletop

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Carbide Inserts
« on: November 01, 2018, 04:33:35 AM »
In the past I have tended to nurse my carbide inserts way beyond their useful life. At around 20 for 10 they can get expensive. So I had a dig around on Ali Express and found these guys.

https://fttools.aliexpress.com/store/3675058

My first batch of CCMT060204 certainly seemed to be everything it said on the box so I ordered some more and they arrived today



150 inserts 62 with free shipping. OK they took about 6 weeks to get here but at that price I'm happy to wait. You don't have to order 150 either my first batch was just 20.

Pete

?To achieve anything in this game, you must be prepared to dabble on the boundary of disaster.? - Stirling Moss

Online Jasonb

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Re: Carbide Inserts
« Reply #1 on: November 01, 2018, 07:26:10 AM »
Are they genuine, there are quite a few fakes about.

Offline Jo

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Re: Carbide Inserts
« Reply #2 on: November 01, 2018, 07:49:48 AM »
:headscratch: Where are you buying fake carbide tips from JB? I've had some cheap tips from the UK but some decent ones at a bargain price from China.

The best tips remain the expensive names and come in at over 5 a tip like Sumitomo - I am on my second triangular Sumitomo tip on my 6mm boring bar after 20 years of abuse use :)

Jo
Usus est optimum magister

Offline doubletop

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Re: Carbide Inserts
« Reply #3 on: November 01, 2018, 08:12:44 AM »
At the prices they are selling them for it was worth a try, so I purchased my first batch.  Something like US$8 for 20. They did the job so could only assume they are genuine and ordered more.

https://www.aliexpress.com/store/product/20PCS-CCMT060204-CCMT21-51-UE6020-carbide-inserts-Internal-Turning-tool-CCMT-060204-Face-Mill-Lathe-Tools/3675058_32857927204.html

Heaven knows why I ordered so many CCMT060204 they'll last me forever.

Pete

« Last Edit: November 01, 2018, 08:20:12 AM by doubletop »
?To achieve anything in this game, you must be prepared to dabble on the boundary of disaster.? - Stirling Moss

Online Jasonb

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Re: Carbide Inserts
« Reply #4 on: November 01, 2018, 12:35:00 PM »
Did not say that I had bought any just that there are some about.

Even my friendly Sumitomo supplier can't be sure if they are genuine or not, there are several reasons they could be cheap. he also says that on his many visits to china he has seen factories with state of the art swiss made machines ( I know you love them) than can produce inserts that have the look but may only be 25% of the quality of the real thing.

As we don't push our home machines at anything like what these inserts would be expected to do on a commercial CNC machine that 25% may well be good enough for us, bit like a fake Rolex which still tells the time and looks good (in some peoples eyes).

The number of years you have had a tool is not an ideal way to say how well it lasts as it is the amount of work done in that time that will affect it not if it sits on a tool rake unused for 12months at a time. This is more of an issue when someone has several machines all with their own sets of QCTP holders and mounted tools where a big tool that only fits one machine that does not get used much will not see the wear that a regularly used tool will.

Remember that chilled piston from the Allman I thought I would use up some Bangood inserts on that, could only get one shallow cut from them before they were blunt, switched to some tips from APC and finished the job with the same bit. Same with that facing head that I posted about earlier, supplied inserts crap but transformed when using Korloy and IG-1.

Offline dieselpilot

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Re: Carbide Inserts
« Reply #5 on: November 01, 2018, 01:11:58 PM »
Put them under a scope and check the nose radius.

https://www.instagram.com/p/BpW_56RASoI/

Offline doubletop

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Re: Carbide Inserts
« Reply #6 on: November 01, 2018, 06:52:43 PM »
Having only ever used the inserts supplied with the holders I have nothing else to make any comparison. The provenance of the OEM inserts could also be in question. As you say Jason we rarely use our machines at indistrial levels I'd guess its up to the individual to make a value judgement.

At 7 for 20 CCMT060204 I'd just suggest its worth a punt. OK you may have to wait for them to arrive but they will turn up. (I had a delivery from China, exit vis Hong Kong, head off to Zurich and then come to New Zealand)

Pete
?To achieve anything in this game, you must be prepared to dabble on the boundary of disaster.? - Stirling Moss