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  1. #1
    Join Date
    Jul 2008
    Location
    Bondoola
    Age
    81
    Posts
    182

    Default A Toolholder to inspire you

    This is the toolholder I made for my lathe. I hope it will inspire you to make one or two for your own lathe. The material I used was 1" square and was case hardened and also finish ground on a surface grinder. Grinding is not needed but made it look very professional for my students at the time. All machining was performed using a vertical mill but it can also be made on a lathe if you can attach an angle plate to the cross slide. The only real important parts are the slot that must be parralel and the "base" for the clamp plate. Once the slot is cut, the rest can be done with the lathe, a hacksaw and a file.
    The slot was positioned so that with a newly formed RH Knife tool, the top edge projected only 4mm past the end of the main body to be on "Center". This alowed the toolbit to slide out further as it was sharpened. I can use the toolbit to take 5mm cuts on mild steel without the toolbit slipping sideways. This heavy cut was taken on an all geared lathe that was very much more powerful than the Myford Super 7 and the tool projected out to 6mm.
    By having an open sided toolholder, it's easy to work in a restricted space or corner. I also made a LH toolholder as well. I really like to use 5mm sq. HSS as it is so much cheaper to buy and is very quick to grind to shape from a blank. Using this idea for a toolholder, make one to suit your own lathe, you wont regret it. You will be surprised how long the 5mm HSS tools last for. You can use the design to enable 1/4" HSS to be used as well.

    Kody

  2. #2
    Join Date
    Nov 2006
    Location
    Heidelberg, Victoria
    Age
    79
    Posts
    2,074

    Default

    Well done Kody, a pat on the back. When I first read you were only using 5mm sq HSS, my initial thought was, too small, but then when you consider it, 5mm sq is a good option. It's cheap to buy, and let's face it, you only use the top and side surface for cutting. My only reservation is rigidity.

    I guess if there's only 6mm or so overhang, this shouldn't be a problem.

    Your design would also be well adapted to a parting off tool.


    Ken

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