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Author Topic: How to turn a Bowling Ball  (Read 816 times)

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Offline armorer77

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How to turn a Bowling Ball
« on: June 24, 2012, 05:47:38 AM »
Since this topic seems to be of interest or amusement I will post the rest of the pics .
 

 
The first question was how to hold it . The answer , install a draw bar .
 

 
Frst , drill & tap for 1/2-13
 

 
The draw bar with a centering collar ready to go . The rod reaches through the headstock and is retained with a big washer and nut .
 

 
As you can see , the jaws are useless in this application .
 

 
Ready for the first cut.
 

 
1st cut complete .
 

 
Drill & tap for the other side .
 

 
Passes guage , I did 11 balls in about 11 hours . Armorer77
 
 
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Offline Zulu

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Re: How to turn a Bowling Ball
« Reply #1 on: June 24, 2012, 09:52:59 AM »
armorer,
How did you know you were centered and straight on the first drill and tap?
Zulu
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Offline armorer77

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Re: How to turn a Bowling Ball
« Reply #2 on: June 24, 2012, 10:15:05 AM »
A good eye , and years of practice . Also the centering jig got me close enough . Ed
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Offline Cannoneer

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Re: How to turn a Bowling Ball
« Reply #3 on: June 25, 2012, 08:05:41 AM »
Ed,
In recalling past threads where guys with BBM's reported losing balls, and considering the time and effort you're putting into reducing the size of these; do you plan on attaching any brightly colored plastic ribbons like some others have? It might cut down on a lot of loud cussing being heard out on the range.
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Offline armorer77

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Re: How to turn a Bowling Ball
« Reply #4 on: June 25, 2012, 01:26:47 PM »
I don't know about tails , but a blaze orange paint job is in order .
Now GOW , here the pictures of my radius cutter you wanted .
 

 

 

 
Here shown set up to cut a 1.23" ball mold . The tool is German , and so is the only manual available . Armorer77
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Offline GGaskill

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Re: How to turn a Bowling Ball
« Reply #5 on: June 25, 2012, 01:37:25 PM »
Now THAT is a radius cutter!
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Offline Zulu

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Re: How to turn a Bowling Ball
« Reply #6 on: June 25, 2012, 01:54:38 PM »
I wish I knew what I was looking at. ??? ??? ??? ??? ???
Zulu
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Offline gunsonwheels

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Re: How to turn a Bowling Ball
« Reply #7 on: June 25, 2012, 04:48:23 PM »
IF someone wants to compare... google Holdridge Radius Cutter and you can see a wanna-be of the tool Ed has.  I am drooling with envy  :P 
 
 
armorer77:
 
Thanks for the pics and info.  I knew there had to be a better version than the Holdridge...

GOW
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Offline armorer77

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Re: How to turn a Bowling Ball
« Reply #8 on: June 25, 2012, 09:58:02 PM »
The only flaws to this tool are the graduation lines are ,008" and the only owners manual is in German . Ed
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