over the top ball turner

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Lykle
Posts: 75
Joined: Thu Apr 23, 2009 11:09 am
Location: Hilversum, Netherlands

over the top ball turner

Post by Lykle » Thu Sep 24, 2009 9:23 am

Well, I finally finished the ball turner.

Lo and behold it works!
I like the way it looks and it offrs me a lot of freedom to use different bits for what I want to do.

Also, by adjusting the height, I can make round shapes or lens shapes. Nice.

Anyway, one more project off the list. Only 999 more to go.
Attachments
P9240096.JPG
Adjustable side
P9240093.JPG
In place
Lykle
Designing for the fun of it.

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SteveM
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Location: Connecticut

Re: over the top ball turner

Post by SteveM » Thu Sep 24, 2009 9:39 am

Lykle wrote:Also, by adjusting the height, I can make round shapes or lens shapes.
Hadn't thought of that. Would make some nice flattened sides for knobs.

Steve

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JimGlass
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Post by JimGlass » Thu Sep 24, 2009 10:22 am

That's pretty neat. Never seen one like that.

What are some of the advantages of yours compared to the others we have seen?

Jim
Tool & Die Maker/Electrician, Retired 2007

So much to learn and so little time.

www.outbackmachineshop.com

websterz
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Post by websterz » Thu Sep 24, 2009 12:51 pm

A video would sure be nice... :D

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SteveHGraham
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Post by SteveHGraham » Thu Sep 24, 2009 1:42 pm

Not bad, but Jose's has a walnut handle!
Every hard-fried egg began life sunny-side up.

Holescreek
Posts: 67
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Location: Centerville, OH

Post by Holescreek » Thu Sep 24, 2009 2:14 pm

I have always wanted to make one like that using a quick change tool post as the holder for easy on/off. How'd you do yours? I saw a photocopy of one from a book awhile back that also had positionable stops for repeatability. Would like to see some photos. -Mike

Holescreek
Posts: 67
Joined: Mon Dec 17, 2007 7:28 pm
Location: Centerville, OH

Post by Holescreek » Thu Sep 24, 2009 2:18 pm

Whoops! I seldom log in here, just browse. I didn't realize before I posted that you already had photos up. :oops: The one I was referring to used a standard boring head.

Ridgerunner
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Location: Near Atlanta, yet far enough away!

Post by Ridgerunner » Thu Sep 24, 2009 4:17 pm

Lykle,
I must be a little slow on the uptake, but how does this tool work? What moves what and where? A photo of work in progress would help me. Thanks

Gary
Satisfaction is using a tool whose capabilities exceed the abilities of its user.

Lykle
Posts: 75
Joined: Thu Apr 23, 2009 11:09 am
Location: Hilversum, Netherlands

sorry, no video

Post by Lykle » Fri Sep 25, 2009 1:11 am

Sorry for the lack of video, people.

The ball turner works by setting it in the middle of the part to be turned.
Then screw out the slide with the tool bit until it touches the "corner" of the rough part to be turned.

Switch on the lathe and start moving the handle over to the left. The bit describes a nice arc over the part. After every pass, screw in the slide holding the tool bit. You will see the ball being formed after every pass.

The stops help to make sure you don't go below the centre line on the right and don't cut the thread holding the part on the right.

The difference with normal lathing is that the cutting force is horizontal straight towards you, instead of straight down.

If anybody wants the plans (metric) just let me know. Only thing I am not happy with is the way I fixed the spindle to the dovetailed block. That was a bit messy.
Lykle
Designing for the fun of it.

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