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  1. #1
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    Nov 2008
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    Default Does Anyone Use Circular Indexable Inserts?

    Before I waste money I thought it might be worth finding out if others use these inserts and how they regard them. Given their increased cutting surface I wonder whether they will function adequately if used on my 2 horsepower mill. Cheap endmills are readily available in one or two cutter configurations.
    s-l500.jpg
    https://www.ebay.com.au/itm/10pcs-RP....c100005.m1851


    Bob

  2. #2
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    Mar 2014
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    South of Adelaide
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    Default

    I use that type of insert in a 50 taper 20hp machining centre at work. Mainly use them for roughing, the large corner radius really helps with tool life.
    I'm not sure how well they would work on a smaller mill, but at that price they would be worth a try, we pay more than that per insert at work.

  3. #3
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    Feb 2013
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    Laidley, SE Qld
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    Default

    I find them useful on the lathe (14 x 40) from time to time, haven't tried them on the mill.

  4. #4
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    Sep 2012
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    York, North Yorkshire UK
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    Default

    G,morning Bob,

    Yes I've used them. They are quite good for long surfaces, like a shaft or as I tried in my earlier days, on a fly cutter. After which I went with the disc type and a small HSS tool bit. Easy to make tool holders for the lathe using them as its simply a flat bottomed recess with a tapped hole through the middle. I've got a couple of different types of insert, but don't have a clue what they are, since I have had them given to me. I don't use them much, preferring HSS to carbide. I really should have a play with them some more
    Best Regards:
    Baron J.

  5. #5
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    Nov 2008
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    Default

    Thank you for the replies Ashley, Bob and John.

    Given their price I'll take a punt.

    Bob.

  6. #6
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    Jun 2007
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    Victoria, Australia
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    Default

    I used them for finishing passes on tough material. Round HSS also works well on plastics.

  7. #7
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    Default

    Years and years ago I got talked into buying a Iscar chamill face mill. It could take four different shaped cutters. I found the round ones were the best for metal removal.
    Gold, the colour of choice for the discerning person.

  8. #8
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    Default

    Quote Originally Posted by topari View Post
    I used them for finishing passes on tough material. Round HSS also works well on plastics.
    Tom,

    I use CCGT inserts mounted in a cut down boring bar for fly cutting with my boring head. I can only use two corners of the insert. These round inserts could prove to be a pretty economical alternative. I just dropped the grand total of twenty bucks for a pack of ten smaller RPMT08 inserts and a single insert 12mm end mill. It will be interesting to see how well they perform.

    Bob.

  9. #9
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    Jun 2011
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    Quote Originally Posted by bob ward View Post
    I find them useful on the lathe (14 x 40) from time to time, haven't tried them on the mill.
    Same, quite useful for profiling welds to get a nice smooth fillet. Reminds me - I need to buy some more, I broke the last one I had.....

    PDW

  10. #10
    Join Date
    Aug 2011
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    Melbourne
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    Default

    That looks like a bargain. I might have to look into round cutters too.

    Simon
    Girl, I don't wanna know about your mild-mannered alter ego or anything like that." I mean, you tell me you're, uh, super-mega-ultra-lightning babe? That's all right with me. I'm good. I'm good.

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