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Thread: guess what cutting tool made this cut

  1. #1
    Join Date
    Dec 2006
    Location
    Central IL.
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    770

    Talking guess what cutting tool made this cut

    I just finished up in the shop, and I was surprised at how smooth this surface turned out. Take your best guess at what cutting tool produced this surface finish. For reference the part is 7075-T6 1.5" wide by 2" long.


  2. #2
    Join Date
    Aug 2007
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    Leics UK
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    Default

    Shaper?

    Dave

  3. #3
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    Aug 2006
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    Beaverton, OR
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    cutting tool or machine?

    Looks like a face mill with the head out of tram.

  4. #4
    Join Date
    May 2003
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    52N 122W Western Kanuckistan
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    It's a shaper. There are slight parallel lines running the long direction of the part. Not a bad finish but much more can be done.

    7075-T6 will produce mirror finishes with the right tooling. It's very hard, about 20% harder than mild steel. It's the one type of aluminum where the swarf cuts you.

    Shapers can produce some interesting finishes.

    Here are some examples on steel:

    This first is the finish from a regular finish cut in mild steel.



    Next we have some fancier finishes.





    Free software for calculating bolt circles and similar: Origin now settable to bottom left! All values positive. Click Here

  5. #5
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    Aug 2004
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    Amazing finish on those parts Evan, how did you get them so white you cannot even see them on the screen???

  6. #6
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    Must be your new internet filter system in operation. They show up fine here.
    Free software for calculating bolt circles and similar: Origin now settable to bottom left! All values positive. Click Here

  7. #7
    Join Date
    Aug 2004
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    Central Queensland, Australia
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    I cleared the cache but still nothing shows..The filter must have classified it as pr0n..

  8. #8
    Join Date
    May 2003
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    Try this. I made one change that might disclose how the filter works.

    Free software for calculating bolt circles and similar: Origin now settable to bottom left! All values positive. Click Here

  9. #9
    Join Date
    Nov 2004
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    Kingsport, TN
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    I'd say a slab mill on a horizontal milling machine.
    Jonathan P.

  10. #10
    Join Date
    Nov 2001
    Location
    Toledo, Ohio
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    Since Dan is the proud new owner of a US Machines vertical mill, I would guess that is what he used to produce that finish. A properly trammed vertical mill with a sharp cutter is quite capable of producing a very nice finish.

    If I had to guess which specific cutter he used, I would go with either a fly cutter or face mill.
    Jim H.

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