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Ball Turning attachment for a Cowells?

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thaiguzzi02/08/2018 15:04:59
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704 forum posts
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If you have a boring head for your mill, make a MT-parallel sleeve adaptor and housing for your top slide or tool post, a handle, and voila - ball turning tool.

Michael Gilligan02/08/2018 15:30:43
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Posted by thaiguzzi on 02/08/2018 15:04:59:

If you have a boring head for your mill, make a MT-parallel sleeve adaptor and housing for your top slide or tool post, a handle, and voila - ball turning tool.

.

Fine in principle, but are you familiar with the Cowells lathe ? : **LINK**

http://www.cowells.com/90me.htm

MichaelG.

JasonB02/08/2018 16:19:41
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I wonder if the small Sherline one would fit

Sam Stones03/08/2018 07:00:17
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Steve,

I meant to show this when your thread appeared.

spherical turning attachment.jpg

It must have been back in the late 60's that I saw something like this in Model Engineer. I can't be sure.

I also had a piece of bronze bar from an earlier project which became the bearing and a means of gripping it under the ML7 tool post clamp.

As you would guess, a round cutter was inserted into the thing on the left.

It went out the door with most of my other equipment.

Regards,

Sam

Frances IoM03/08/2018 07:32:22
1395 forum posts
30 photos
Sam - suspect this is the original Radford design (ME 4 Oct 1968 p968)that was sold with slight modification as a Hemingway kit
Sherlock03/08/2018 10:48:37
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11 photos

Thanks Guys, I don't know what impresses me most.. Your knowledge and ingenuity or your memory! teeth 2

thaiguzzi03/08/2018 14:31:43
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704 forum posts
131 photos
Posted by Michael Gilligan on 02/08/2018 15:30:43:
Posted by thaiguzzi on 02/08/2018 15:04:59:

If you have a boring head for your mill, make a MT-parallel sleeve adaptor and housing for your top slide or tool post, a handle, and voila - ball turning tool.

.

Fine in principle, but are you familiar with the Cowells lathe ? : **LINK**

http://www.cowells.com/90me.htm

MichaelG.

Ah, right. Ahem. So a 0MT boring head it is then.....

Michael Gilligan03/08/2018 17:57:05
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23121 forum posts
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Posted by thaiguzzi on 03/08/2018 14:31:43:
Ah, right. Ahem. So a 0MT boring head it is then.....

.

yes

Sam Stones03/08/2018 20:02:01
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922 forum posts
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Frances, You got it in one.

That's about the time I started buying Model Engineer.

Well done that man!

smile d

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