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Type: Posts; User: meowkat

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  1. Replies
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    Thanks Michigan, might be something to try if it...

    Thanks Michigan, might be something to try if it for some reason the kennametal stops working.
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    Small update, tried the niagara and got lots of...

    Small update, tried the niagara and got lots of chatter, tried a guhring diver and got a little bit of chatter and then it exploded doing a straight plunge as advertised, tried a kennametal Harvi 1...
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    267100267101

    267100267101
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    I have it screwed down with 4 5/16-18 screws to a...

    I have it screwed down with 4 5/16-18 screws to a 1/2" steel plate on top of a pierson pallet. The double sided tape should tell me if it's lifting up and breaking the tools.
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    Well I'm using it as sort of a "high feed" tool,...

    Well I'm using it as sort of a "high feed" tool, 0.010" DOC, 45 IPM, 5,000 RPM. Low spindle speeds available on the old cnc but it is reliable and the tool life was better than all the broken ones....
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    Hmm worth a try I guess. HSS to the rescue?

    Hmm worth a try I guess. HSS to the rescue?
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    A1011 plate, it shouldn't be hardened but it's...

    A1011 plate, it shouldn't be hardened but it's pretty tough and hot rolled. The slots go all the way through, it's held down reasonably well for plate (I probably need to buy a cheap magnet and just...
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    Slotting tool recommendations

    I'm having a heck of a time getting good tool life doing some slotting around a circular profile in thin steel plate (0.130" thick). 5" diameter circle on each part.

    I'm currently using: ...
  9. All good advice, might try stacking them to save...

    All good advice, might try stacking them to save some time.
  10. Vacuum plate or tabs? High feed or 3flute slotting?

    Have a medium sized order of thin plate parts to mill out of a larger sheet, 10 gauge (~0.130 or so) steel 1011 structural plate.
    I can screw the plates down reasonably well, there is enough...
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    Huh I have been overlooking the msc website. ...

    Huh I have been overlooking the msc website. I'll give them a try. Finding what I want is quite a bit slower than say, McMaster but they do have a decent selection.
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    Tooling suppliers, endmills, grooving tools

    Doing some job shopping and the tools are important.

    Is there a great source for grooving tools similar to Harvey for small endmills? Had a job come up that needed a 25 thou wide groove with 10...
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    Thanks for the replies. It seems that plastic...

    Thanks for the replies. It seems that plastic deforms quite a bit when machining :/
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    Coolant and PolyPropylene?

    Why do so many people machine (mill) PolyPropylene (PP) dry with an airblast? Is there some issue with common flood coolants? What about a fog buster coolant mist air blast? Anything else I should...
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    lol PM inbox full

    lol PM inbox full
  16. small tools, mill vise is the handiest, a set of...

    small tools, mill vise is the handiest, a set of parallels, rubber hammer (don't hammer on the mill), 3-flute stuff from lakeshore is probably good--I would also recommend high-helix endmills for...
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    ER20 is very much on the low end of rigidity at...

    ER20 is very much on the low end of rigidity at the 1/2" tool size, even on my Tormach I won't rough with a 3/8" or bigger in an ER20 holder. Set screw is the preferred. The difference in rigidity...
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    PM sent, just making sure you got it (it's not in...

    PM sent, just making sure you got it (it's not in my sent messages inbox for some reason).
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    Media tumbled perhaps? I can certainly do that.

    Media tumbled perhaps? I can certainly do that.
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    Is the part highlighted in blue actually tapered...

    Is the part highlighted in blue actually tapered almost imperceptibly or is this just an artifact of the modeling?
    What kind of surface finish do you need?
    259921
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    CNC Machining source, Southern IL area

    We've been focused on a prototype product of our own for some time now and the bills are piling up. Got idle machines, want to work if you have CNC prototyping stuff or regular job shop work. Bulk...
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    Well perhaps the latest advisory on Chinese...

    Well perhaps the latest advisory on Chinese avenues of economic aggression would help avoid fake copies?

    https://s3.amazonaws.com/media.hudson.org/images/NavarroMatrix.png
  23. You could try shimming and then using machine...

    You could try shimming and then using machine epoxy to fill the gaps (very low deformation epoxy).

    Tramming a milling machine with epoxy - YouTube
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    The right end of the X axis ballscrew is exposed,...

    The right end of the X axis ballscrew is exposed, I don't know if the steppers hold the machine in place, and I don't know if they will register the movement as steps and be able to use the...
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    Corner Radius Tools?

    Greetings, I'm fairly new to CNC machining and modern cutting tool features like corner radii and variable flute/helix.

    It seems to me that unless I need a square corner I would use a corner...
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