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

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    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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    Altair (07-11-2019), baja (07-12-2019), DIYSwede (07-11-2019), Gromet (07-12-2019), Jon (07-11-2019), Miloslav (07-14-2019), mwmkravchenko (07-13-2019), PB Machines (07-12-2019), Tenn (07-12-2019), that_other_guy (07-14-2019)

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    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; 07-11-2019 at 01:11 AM.

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    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 (07-12-2019)

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    Content Editor Altair's Avatar
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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 (07-11-2019)

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    PB Machines's Tools
    Way cool I love Homemadetools thanks for sharing

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    Thank you.....


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