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Thread: My Homemade Radius / Ball turner disassembly and demonstration of convex and concave

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    Supporting Member 737mechanic's Avatar
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    My Homemade Radius / Ball turner disassembly and demonstration of convex and concave

    I did a video showing the Radius / Ball turner I built a few years ago. I take it apart to show how it was made then I show it cutting a concave and convex radius.


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  2. The Following 12 Users Say Thank You to 737mechanic For This Useful Post:

    Altair (Jul 11, 2019), baja (Jul 12, 2019), bobstar (Nov 24, 2021), Canyonman44 (Jan 21, 2020), DIYSwede (Jul 11, 2019), Gromet (Jul 12, 2019), Jon (Jul 11, 2019), Miloslav (Jul 14, 2019), mwmkravchenko (Jul 13, 2019), PB Machines (Jul 12, 2019), Tenn (Jul 12, 2019), that_other_guy (Jul 14, 2019)

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    Supporting Member DIYSwede's Avatar
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    Thanks! Simple, rigid and operative mount, and a clever greased register bearing,
    doing away with any ball bearing that'll just add stack height and less rigidity.
    Nicely machined insert holder also, but did you mention the inserts' rake angle?
    You might consider changing the set screws for brass dog points, to avoid marring the holder, tho.

    2 cents
    Last edited by DIYSwede; Jul 11, 2019 at 01:11 AM.

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    737mechanic (Jul 11, 2019), Tenn (Jul 12, 2019)

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    Supporting Member 737mechanic's Avatar
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    Quote Originally Posted by DIYSwede View Post
    Thanks! Simple, rigid and operative mount, and a clever greased register bearing,
    doing away with any ball bearing that'll just add stack height and less rigidity.
    Nicely machined insert holder also, but did you mention the inserts' rake angle?
    You might consider changing the set screws for brass dog points, to avoid marring the holder, tho.

    2 cents
    Thank you for your advice, I like the idea of dog points, I will have to add those. The rake angle was 5 degrees and I did forget to mention that in the video and that is an important part of getting successful cuts. I will mention that in the description on youtube.

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    Tenn (Jul 12, 2019)

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    Thanks 737mechanic! We've added your Radius Ball Turner to our Lathe Accessories category,
    as well as to your builder page: 737mechanic's Homemade Tools. Your receipt:




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    737mechanic (Jul 11, 2019)

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    Way cool I love Homemadetools thanks for sharing

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    Supporting Member 737mechanic's Avatar
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    Thank you.....

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    Supporting Member Canyonman44's Avatar
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    I think I have Found My Ball Turner Project!!!! This one should be Stickyed(?)
    Thank You for documenting this!
    Thanks again

    Ken



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