Boring head ball turner

[HevansccParticipant @hevanscc]

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

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

[HevansccParticipant @hevanscc]

[Neil WyattModerator @neilwyatt]

Nice one Hywel.

[SillyOldDufferModerator @sillyoldduffer]

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

[NobbyParticipant @nobby]

Hi Guys
Here is mine using a boring head I made

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

[mechman48Participant @mechman48]

Nice job Hywel

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

George.

[HevansccParticipant @hevanscc]

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 . . .

[HevansccParticipant @hevanscc]

Posted by Nobby on 30/11/2017 10:42:49:

Hi Guys
Here is mine using a boring head I made

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

[HevansccParticipant @hevanscc]

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… ​ 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

[mechman48Participant @mechman48]

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… ​ 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.

[thaiguzziParticipant @thaiguzzi]

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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