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johnhurd
12-22-2005, 05:24 PM
I made a ball turner from material I had and this is my first ball??? guess I need more practice, any hints????

http://img.photobucket.com/albums/v338/johnhurd/acorn.jpg


http://img.photobucket.com/albums/v338/johnhurd/turner.jpg

aboard_epsilon
12-22-2005, 05:29 PM
The pivot point of your ball turner is ment to be on the centre of the proposed ball...if the ball you were turning had a core like the earth then the centre of this core should be above your pivot point.


all the best,,,,,mark

Dawai
12-22-2005, 05:42 PM
A simple ball jig can be made with a 4" indexer.

Mount the toolpost on it, move center to ball radius center, crank indexer.

Last one I did like this I had blisters. it was pretty thou. I had some chatter but it was the height of the tool.

johnhurd
12-22-2005, 05:49 PM
OK that is it I started at the RH end thanks

Mcostello
12-22-2005, 09:32 PM
Remember what you did to make that shape as next week you will need an acorn nut. http://bbs.homeshopmachinist.net//smile.gif

TJB
12-22-2005, 09:46 PM
<font face="Verdana, Arial" size="2">Originally posted by johnhurd:
I made a ball turner from material I had and this is my first ball??? guess I need more practice, any hints????

http://img.photobucket.com/albums/v338/johnhurd/acorn.jpg
Can't help with the challange but really enjoyed your posting notice! Have a great holiday!

http://img.photobucket.com/albums/v338/johnhurd/turner.jpg

</font>

Kdahm
12-22-2005, 09:49 PM
Then put the saddle back on the bicycle.

Althouth the other posts answered the question. The center of rotation of the ball cutter was not at the center of your desired ball.

Paul Alciatore
12-22-2005, 10:25 PM
I like it. Do your own thing and don't apologize to anyone.

Paul A.

matador
12-23-2005, 12:07 AM
I think your balls are cute! http://bbs.homeshopmachinist.net//biggrin.gif.Something different from all those boring round ones. http://bbs.homeshopmachinist.net//biggrin.gif http://bbs.homeshopmachinist.net//biggrin.gif

------------------
Hans

Carl
12-23-2005, 12:38 AM
http://www.bbc.co.uk/teens/lads/beardedlady/comicstrip/images/squirrel_nuts.gif

mklotz
12-23-2005, 09:47 AM
The mathematical name for the shape you turned is an 'ogive'. It is the shape
that most of us think of when we visualize a rocket nose cone.

If you know any folks involved in amateur rocketry, they may appreciate your
newfound ability to turn this unusual shape.

On a completely different note, I've turned similar shapes to serve as the
bishop's miter for chess pieces.

Regards, Marv

Home Shop Freeware - Tools for People Who Build Things
http://www.myvirtualnetwork.com/mklotz

lugnut
12-23-2005, 11:02 AM
John, I just finished making a ball turner. I used Steve Bedair's plans to build it. He also has the following web page to show it's use. http://bedair.org/Ball/ball4.html
Mel

[This message has been edited by lugnut (edited 12-23-2005).]

johnhurd
12-23-2005, 02:29 PM
All is well my balls are back to being round

http://img.photobucket.com/albums/v338/johnhurd/MVC-001S.jpg

tattoomike68
12-23-2005, 07:11 PM
I use a super cheap tracer made from a popsicle stick and cardboard.

http://img.photobucket.com/albums/v488/miketattoo68/ballhalf.jpg