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  1. #61
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    One more thing, starting low, slowly increase the RPM/SFM to a point it still doesn't chatter to gain the shortest cycle time, and also the feed rate. In a perfect world you could run that end mill upwards to .003+ IPT in a straight cut

  2. #62
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    He uses special drill chuck for holding his face-mills too.

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    Quote Originally Posted by Bobw View Post
    It wasn't serious.. That was from years ago, a thread kind of like this one, so I cobbled up the
    most horrendous cluster fuck I could, and labeled it "no chatter"... I did not take a cut, the part was
    already made, I didn't even turn on the spindle.
    sure you did.

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  5. #64
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    drill out the corners of the close to finish.slow down the spindle rpms about two thirds.climb mill the finishing cuts at a slower feed rate.

  6. #65
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    Quote Originally Posted by ferndot View Post
    drill out the corners of the close to finish.slow down the spindle rpms about two thirds.climb mill the finishing cuts at a slower feed rate.
    Shit, why didn't we think of that?

  7. #66
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    Quote Originally Posted by litlerob1 View Post
    Shit, why didn't we think of that?
    Because you are a brainless tooling twit or maybe would not cut some slack to a new poster on the board.
    Not sure which.
    Bob

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  9. #67
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    Quote Originally Posted by CarbideBob View Post
    Because you are a brainless tooling twit or maybe would not cut some slack to a new poster on the board.
    Not sure which.
    Bob
    Is it unreasonable to hope that the new guy would read the thread before posting?

    But compared to yourself, I am a brainles turling twat Oh hey, give me your paypal account number, I'll send you a dollar, you can go get yourself a sense of humour.

    R

  10. #68
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    Quote Originally Posted by DFrench View Post
    When a car goes around a corner, are the outside and inside wheels turning and the same speed?
    It depends. If you come off the apex hard enough the inside front will lift and actually slow down.

    Also, if you lock the differentials the wheels rotate at the same speed.

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  12. #69
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    Quote Originally Posted by litlerob1 View Post
    Is it unreasonable to hope that the new guy would read the thread before posting?

    But compared to yourself, I am a brainles turling twat Oh hey, give me your paypal account number, I'll send you a dollar, you can go get yourself a sense of humour.

    R
    Yes, No, Maybe to the first.

    Problem with a post is that is hard to see emotion. I saw sarcasm and disrespect which it seems you did not mean.
    So..... "OK" to beat down the new guy but maybe my post tweaked you a bit?
    Maybe I do have a sense of humor that is also not coming across in print.
    Do you remember being the new guy here full of worry over any answer back?
    I certainly do so I tend to be quick to defend the new guy.
    Bob

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  14. #70
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    Quote Originally Posted by CarbideBob View Post
    Yes, No, Maybe to the first.

    Problem with a post is that is hard to see emotion. I saw sarcasm and disrespect which it seems you did not mean.
    So..... "OK" to beat down the new guy but maybe my post tweaked you a bit?
    Maybe I do have a sense of humor that is also not coming across in print.
    Do you remember being the new guy here full of worry over any answer back?
    I certainly do so I tend to be quick to defend the new guy.
    Bob
    Don't start a trend Bob, you might unravel all the years of biting responses we have come to know here on PM.
    "Brainless Tooling Twit" is a pretty clear message though.

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    Quote Originally Posted by litlerob1 View Post
    ....
    "Brainless Tooling Twit" is a pretty clear message though.
    Not a message at all.
    The net just so much looses that personal connection where you toss out insults with respect.
    Sorry if it came off harsh. Just a poke.
    Bob

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  17. #72
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    As deep as those chatter marks are it may possible that your rougher is chattering so hard there isn't enough material to clean it up with the finish pass. I'd say dykim it after roughing and see whats red after finishing. It's not a certainty, but I think it's worth a look.

  18. #73
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    Quote Originally Posted by Cheshire View Post
    As deep as those chatter marks are it may possible that your rougher is chattering so hard there isn't enough material to clean it up with the finish pass. I'd say dykim it after roughing and see whats red after finishing. It's not a certainty, but I think it's worth a look.
    I have not had chatter issues with the rougher. I've been getting along pretty well here recently with the Maritool reduced shank end mills for deep stuff. I also slow it down in the corners and generally don't run it as fast as the regular length finisher.

  19. #74
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    Try leaving more material for finish pass. Say .01"-.012". And/or slow down rpm to 800-1000.


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