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Boring head ball turner

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Hevanscc29/11/2017 21:38:38
88 forum posts
33 photos

Finally completed my ball turning attachment to make use of my under utilised boring head. This was the culmination of a two month process which required me to make:
1. Gear cutters to make the ...
2. Missing changewheels for the lathe to ...
3. Screwcut the M14 thread on the shaft to screw into the boring head and...
3. To finish the shaft to fit the bearings in the toolpost block which was ...
4. My first attempt at cutting a dovetail on the mill ...
5. And the first ball is the one on the handle
Boring head ball turner
I learned a lot doing it and very pleased with the result.


Hywel

Edited By Hevanscc on 29/11/2017 21:57:22

Edited By Hevanscc on 29/11/2017 21:58:15

Neil Wyatt29/11/2017 21:59:02
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Moderator
16585 forum posts
687 photos
75 articles

Nice one Hywel.

SillyOldDuffer30/11/2017 10:20:29
4723 forum posts
1010 photos

Good work Hywel. I notice you had to solve a cascade of other problems to finish the job. Typical of my experience too and sometimes bad for morale. The good news is that the more challenges you solve in a workshop, the easier it gets in future. I'm impressed - I still don't have the courage to tackle that many new things in one go. Well done you!

Dave

Nobby30/11/2017 10:42:49
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587 forum posts
113 photos

Hi Guys
Here is mine using a boring head I maderadius turning

Edited By Nobby on 30/11/2017 10:44:53

mechman4830/11/2017 11:04:23
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2461 forum posts
371 photos

Nice job Hywel

​I have a store bought one that I have yet to use... thinking​ as an aside, have you altered the geometry of the boring bar cutting tip or is it as is ?

George.

Hevanscc30/11/2017 11:41:20
88 forum posts
33 photos
Posted by SillyOldDuffer on 30/11/2017 10:20:29:

Good work Hywel. I notice you had to solve a cascade of other problems to finish the job. Typical of my experience too and sometimes bad for morale. The good news is that the more challenges you solve in a workshop, the easier it gets in future. I'm impressed - I still don't have the courage to tackle that many new things in one go. Well done you!

Dave

Thanks Dave. The main incentive being the quote I got to buy the missing changewheels, necessity being the mother of invention etc . . .wink

Hevanscc30/11/2017 11:42:22
88 forum posts
33 photos
Posted by Nobby on 30/11/2017 10:42:49:

Hi Guys
Here is mine using a boring head I maderadius turning

Edited By Nobby on 30/11/2017 10:44:53

Nice. I didn't go as far as you and make the boring head too, very impressed.

Hywel

Hevanscc30/11/2017 11:45:05
88 forum posts
33 photos
Posted by mechman48 on 30/11/2017 11:04:23:

Nice job Hywel

​I have a store bought one that I have yet to use... thinking​ as an aside, have you altered the geometry of the boring bar cutting tip or is it as is ?

George.

I thought about that, but after a bit of mental three dimensional gymnastics I decided that the geometry of the cutting edge of the boring bar, as presented to the revolving work, is the same as a regular knife tool used in the normal way. In other words I used it as it is and it worked OK . . .

Hywel

mechman4830/11/2017 22:19:57
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2461 forum posts
371 photos
Posted by Hevanscc on 30/11/2017 11:45:05:
Posted by mechman48 on 30/11/2017 11:04:23:

Nice job Hywel

​I have a store bought one that I have yet to use... thinking​ as an aside, have you altered the geometry of the boring bar cutting tip or is it as is ?

George.

I thought about that, but after a bit of mental three dimensional gymnastics I decided that the geometry of the cutting edge of the boring bar, as presented to the revolving work, is the same as a regular knife tool used in the normal way. In other words I used it as it is and it worked OK . . .

Hywel

Thanks for the info.

thaiguzzi01/12/2017 04:34:12
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575 forum posts
131 photos

Nice. looks almost identical to mine, except mine is a big alloy block that actually replaces the QCTP Dickson/Bison tool post.

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