Carbide parting off tool

[Tin Falcon]

Thankful for totally enclosed machines with bullet proof glass windows.

the machine I ran IIRC was not totally enclosed but mostly and the glass wan not bulletproof.
DAMHIKT scary when you hear what sounds like a gun shot and the glass on the safety encosier crumbles. Yeah !!!

Tin

 

[Runner]

Nothing useful to add. Just got to say that John's (Bogstandard) Mircona Video was a WOW moment for me. Poetry in Motion.

Brian

 

[hammer2100]

I loved the video also but can anyone tell me of a dealer for Mircona in the GOOD OLD USA. I have a job coming up that I think one of those would be very helpful. Thanks :bow:

 

[Blogwitch]

Mark,

I think you will find that other manufacturers also do specialised tooling like Mircona's.

The only reason I eventually settled on them was because I could buy the occasional different holder off eblag for a few cents on the dollar. There is no way I could afford paying the full price. I can't remember exactly at this time how many I do have, maybe 5 or 6 different holders and dozens of different shaped tips. All bought over a space of a couple of years.

The main advantage is that they can all use the same tips, plus there are a vast range of different width and shapes amongst what is available.

I just did an UK eblag search and only came up with a few tips. Other times there will be all sorts to choose from.

http://www.ebay.co.uk/sch/i.html?_trksid=p5197.m570.l1313&_nkw=mircona&_sacat=0

You just have to persevere.

One thing you must realise, they are geared towards CNC machinery, so the shank sizes can be a little on the large side, but there is nothing wrong in copying and making the holder shapes in a smaller shank size and use the original tips, as they are tiny.

John

 

[kuhncw]

rhitee93 and rkepler mentioned the Nikole cutoff and grooving tooling using carbide inserts. This is a nice setup and I use it as well on small parts.


AR Warner sells HSS inserts that fit the Nikole holders. I've found the HSS inserts to be more forgiving than the carbide and wanted to pass the source along to others.

http://www.arwarnerco.com/Arthur R Warner Co Catalog 1C.pdf


I believe Little Machine shop also sells the AR Warner HSS tooling and inserts.

Regards,

Chuck

 

[rkepler]

AR Warner sells HSS inserts that fit the Nikole holders. I've found the HSS inserts to be more forgiving than the carbide and wanted to pass the source along to others.

http://www.arwarnerco.com/Arthur R Warner Co Catalog 1C.pdf

The best prices I've been able to find for the Nikole GIE-7 inserts was about $12 per, Warner lists their HSS "groover" bits at $10 per. That's a decent deal, and while some folks here can grind carbide tooling most can put a new edge on a HSS tool and keep the insert alive for a long while.

I don't usually use the Nikole for grooving as I have a pretty good set of Thinbits from Kaiser. Since they're never used for parting off they usually maintain their thickness, handy when cutting a circlip groove.

 

[idahoan]

Thin Bits are great I have a small assortment of them that come in handy quite often; they are also great for cutting piston ring grooves.

I purchased an insert cutoff tool from Enco (it was a Newcommer brand "USA") and I was never very happy with it. I came with a box of inserts and I purchased a second box. I usually just ended up using my HSS holder and blade. One day I was using the Iscar tool at work and it was amazing how much better it worked.

Both of the holders used the same blade so it had to be the insert; I compared the Iscar insert from work to mine under the microscope and the problem was obvious. The inserts that were included with the kit were garbage; but the second box I had purchased were comparable to the Iscar inserts.

So I started using the inserts from the second box and I now I love my insert parting tool.

Just a little FYI.

Dave

 

[seal killer]

websterz--

I have worked in production shops on lathes up to 48" swing where big beefy carbide is the rule. Now that I am retired and running my own lathe (12x36) I have re-discovered the joys of a good HSS parting tool. I am not talking about the crappy Chinese flat blades. I grind my own out of 1/2" VASCO or Rex AAA, which ever I have on hand at the time. Somewhere I have a few pieces of Red Cut Cobalt stashed away for a rainy day. ;D I make the tools on my surface grinder and give them a slight hollow grind below the cutting surface for clearance. The tops of the tools get a shallow groove that runs the length of the tool with a Dremel and a cut-off wheel. The groove causes chips to fold inward and crumble, making for great chip clearance. Parting is the number one job I do on the lathe, up to 100 cuts a day in 9/16" 4140. I can run all day, cutting under power, without touching up the tool. Why pay for expensive carbide inserts when a $15 piece of HSS will allow me to grind literally thousands of cutting edges?

Can you post a picture of one of your cutoff tools?

Thanks!

--Bill