Insert Tools

[James AParticipant @jamesalford67616]

I was wondering whether anyone has used these particular insert tools from Arceuro and whether they are suitable for a small lathe? I have a Flexispeed with a top speed of 500rpm.

**LINK**

Thank you.

James.

[James AParticipant @jamesalford67616]

[Nick_GParticipant @nick_g]

.

I have used the CCMT inserts that they take at 500 rpm with reasonable results so long as the feed rate is not too fine.

But then again it's linked to the dia and type of material you intend to cut.

Nick

[John ReeseParticipant @johnreese12848]

I think the CCGX inserts would be a better choice. They are dead sharp and have a polished top face. They are primarily intended for aluminum but work very well in steel on lower powered machines. They will fit the holders you described.

[Niels AbildgaardParticipant @nielsabildgaard33719]

I started with a bougth tool like shown,but made something infinitely better.

**LINK**

If interested make one Yourself.

 

 

http://www.homemodelenginemachinist.com/showthread.php?t=10175&page=2

Edited By Niels Abildgaard on 01/05/2017 08:40:52

[Nick_GParticipant @nick_g]

Posted by John Reese on 01/05/2017 05:47:25:

I think the CCGX inserts would be a better choice. They are dead sharp and have a polished top face. They are primarily intended for aluminum but work very well in steel on lower powered machines. They will fit the holders you described.

.

Thanks for the tip. Just found some Sandvik ones 10 off for £10 on ebay (bargain) so will give them a try.

Nick

 

Edited By Nick_G on 01/05/2017 11:17:33

[Neil WyattModerator @neilwyatt]

The Flexspeed is a small lathe so I agree the ground inserts, which are sharper, should be best.

Neil

[Ian S CParticipant @iansc]

But don't get too carried away, for a small lathe like your's most work done can be with HSS, there will be times when Tungsten Carbide is needed, castings with hard outside, some harder steels and stainless.

Ian S C

[James AParticipant @jamesalford67616]

Thank you for the replies. I know that carbide tools are not that useful on this machine type and was aware that some inserts are carbide: hence the question.

I shall look at getting a CCGX insert and a holder to try out. I have been using HSS bits successfully, but like the idea of being able to just pop in a new cutter when needed without needing to reset the height. I also thought that it would a good way to compare my own tool grinding with a "known" tool.

The home-made holder looks sturdy; thank you for the link.

James.

[Howard LewisParticipant @howardlewis46836]

My understanding is that carbide tips rely on the metal reaching a temperature, locally, where it becomes plastic.

The tips were developed for heavy, rigid, industrial machines where a high rate of metal removal is vitally important.

For this to happen, usually requires high speeds and heavy feeds, which most hobby machines do not provide, or are not sufficiently powerful or rigid to withstand.

Having said that, many hobbyists use replaceable tips with success. A feasible alternative is to use HSS.

Tangential tool holders (Bought or shop made) using HSS toolbits, are particularly effective, and HSS tolerates the odd bang far better than Carbide tips (How do I know?) and can work out cheaper in the long term.

Howard

[KWILParticipant @kwil]

Ian, The right indexable tip is the best for getting under that chilled casting surface, that was my introduction to indexable tips many years ago by an ex Sandvik man.

[richardandtracyParticipant @richardandtracy]

I work mostly in plastics & brass for pen making. Got a boring tool 2 weeks ago that goes down to 8mm with 10 of those inserts for under £7. Works great on my pens at 680 rpm on either the brass or plastic bits. The 10 inserts will probably last me out given that my normal most used 60 degree inserts have lasted 15 years already & I have 4 of the 10 left.

Regards

Richard.

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