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I Forge Iron

vapremac

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Posts posted by vapremac



  1. I'd have to agree with Mr. Mullins , its first life was a shaft of some sorts ,
    it even appears to have a flat milled on one side in the third pic.
    Follow the others fine advice and have at it,a three-square file would work great
    for cutting in the flutes.

  2. Fine job !
    That definitely takes some talent and an eye for detail ,like the platypus,to
    assemble all the pieces together and still maintain a smooth and rounded appearance.

    There is a fellow on another forum that does similar work and he can't build them
    fast enough for all the orders he has.He'll post progress pics of the build on his
    Facebook page ,kinda interesting to follow.

  3. Curly......I believe you're right,the possibilities are endless.

    The tooling is only limited by ones imagination. I would be interested in seeing
    a texturing tool that would do a checkering pattern such as that on a gun stock.

    Ever seen anything like that Jim or Nuge ?

  4. JacksonH,

    IMHO good drills and cheap both have their place in the shop, alot of the decision process
    when determining which brand or quality to purchase is the level of precision you are trying to
    achieve.
    The lower price drills,Harbor Freight ones,I use them and can get them to hold a decent grind
    over an extended period of time (with proper speeds and cutting oil). The issue that I have with the
    cheaper drills is that they do not run concentric, meaning they don't rotate in true circle but more of
    an oval. If that is of no big concern to the type of work you are doing then they will be fine. With the
    cheaper drills you won't feel to bad when one breaks or honing your grinding skills.
    When my jobs call for precision tolerance, I leave the cheap ones in the tool room.
    For this I prefer morse taper shank twist drills, American made , more expensive but a whole
    lot more peace of mind.
    So my take on both.........each have their place,depends on the task at hand as to the quality
    of choice.
    Hope that helps.............

  5. JacksonH........Glad to hear you were able to accomplish what you set out to do in the first place.

    DSW.........I agree 100%, there is quite a bit of "mild steel mystery metal" floating around among the
    material suppliers, run in to right often.

    118 degree split point jobber length drills are the most commonly sold twist drills and cover a
    wide range of typical applications in the shop. The correct grind angle is 59 degrees (118/2=59).
    I hand grind so it could end up 5+- degrees. The critical areas of twist drill grinding is to
    maintain proper web length and web center. Probably the most neglected angle when putting a
    fresh grind on a twist drill is the positive rake (the land should gently slope downward from the
    cutting edge). This allows the cutting edge to do it intended job of cutting, run cooler,evacuate
    the chips and speed up the whole process. A cutting oil will dramatically extend drill life and
    regrinds.
    Each material classification (1018,4140,316SS) has it own set of drilling specs known as
    surface feet per minute for a high speed steel or a carbide twist drill. Once the material class is
    known,the SFM and the diameter of the twist drill,a few calculations preformed and that will give
    you the proper RPM at which to set your machine.
    Like Rich Hale mentioned,cutting speeds are crucial to long tool life,use the hex nuts for a
    point gauge,it takes a little time to learn to properly put a good grind on a twist drill.
    So,even though you believe you hardened the material, changing some of the drilling parameters
    would have let you bore the hole.

  6. Looks like your headed in the right direction......this forum is filled with knowledgeable and
    talented members that will be happy to answer any questions you may have.
    As far as what tools you may need.......alot of that depends on how specialized or diversified
    you ultimately want your operation to be.
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