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Thread: Form Tools

  1. #1
    Join Date
    Jan 2002
    Location
    Huntsville Ala
    Posts
    4,787

    Post Form Tools

    Two or three hundred yards from where I work is a large surplus/salvage store that has lots of stuff from A to Z. Lots of interest to me including fasteners, hdwr and tools, including machining tools. They have one whole cabinet of what I'd describe as professionally ground form tools (HSS). Some straight, like lathe toolbits (some up to maybe 2" sq or rectangular) - some from rounds with just one cutting surface, kinda of a 1-flute tool. But those round ones don't seem to have any relief ground behind the cutting edge, and look like they're used in a stationary mode like a lathe tool. ...but the flute is cut so that, as a lathe tool, they'd have to be used upside down or on the backside

    All of the lathe tools seem to have zero rake on top, and include some pretty complex shapes as well as coves and half-rounds.
    I'm sure this all came from some large production shop's liquidation.

    Do large shops normally do grinding of tools like that in-house? or farm it out to specialists?

    Most of this is probably too big your average homeshop machining activity, but if anybody needs something specific send me an email and I'll try to see if they have it. I usually make a browsing trip every couple of weeks at lunch.

    There's another cabinet of various reamers (mostly huge).

    Their sign says $1500 for cabinet + contents, or individual items at 1/2 MSC book price. (Don't know how they'd find a book price for those form tools).

    (NOTE: I have no vested interest in this. Just offering to help any of you who might be searching for some hard to find, specific tool.)

  2. #2
    Join Date
    Mar 2001
    Location
    Nottingham, England
    Posts
    14,196

    Post

    They have got to be joking at 1/2 MSC price.
    That sort of stuff is pence up from scrap values.

    John S.
    .

    Sir John , Earl of Bligeport & Sudspumpwater. MBE [ Motor Bike Engineer ] Nottingham England.



  3. #3
    Join Date
    Jul 2002
    Posts
    3,594

    Post

    On circular form tools place a scale so that the edge is on the lip of the tool and the bottom of the hole. The daylight between the lip and the back of the gash is the relief. Circular form tools are ground on a special fixture that looks like(and sometimes is) a small angle plate.

  4. #4
    Join Date
    Jan 2002
    Location
    Huntsville Ala
    Posts
    4,787

    Post

    yeah, I can see your point John. Unless someone needed the specific form of one of these, then they're essential useless.

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