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Which ball turner?

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john halfpenny29/10/2020 15:50:00
80 forum posts
15 photos

My scrap material20201029_154137.jpg Bedair variation. Like Jason, made to suit centre height. The screw head sits in a cross slide tee slot.

oldvelo29/10/2020 19:52:45
248 forum posts
53 photos

Hi Clive

I can now see how a smaller lathe with a boring head fo a ball turner is a bit of shoe horn job.

A round piece of tool steel does a good job and cuts left and right

Ball Turner Boring Bar

This is the MEW Boring Bar set up as a Ball Turner. Has turned out a lot of stainless knobs to replace plastic ones.

Eric

Jim Beagley29/10/2020 21:02:33
103 forum posts
52 photos

Well I’ve bought the Hemingway kit from Clive - thanks for all the advice everyone. Much appreciate the ideas and input.
Cheers,
Jim

Nimble30/10/2020 03:00:45
avatar
44 forum posts
2 photos

Hi Jim,

If you go to the boring head style make sure you look at **LINK**

He shows the best idea for a cutting tool, using a circular insert ceramic tool tip. No grinding of difficult angles for the cutting tool, a brilliant system! ------ I see I am too late as you have made your decision, but any others either using or contemplating the boring head style should take time out to look at this.

Regards,

Nimble Neil

Sam Stones30/10/2020 03:56:24
avatar
784 forum posts
308 photos

From the dark distant past. That's a lump of bronze in't middle.

spherical turning attachment.jpg

I can't recall using it for much more than a couple of handles, as on the turret here ...

A six-way turret

Cheers.

Sam

Vic31/10/2020 16:23:31
2645 forum posts
20 photos

My ball turner is the second one in this link.

Ball Turner

I chose to use a slim insert to give good access but it still fouls the workpiece sometimes. I think using a triangular insert would be even worse.

I also made a ball turner for my wood turning lathe using 6mm round carbide inserts and that works very well. I have seen a metal ball turner that uses the same insert but I don’t know how well it works cutting metal balls.

Roderick Jenkins31/10/2020 17:48:19
avatar
1982 forum posts
512 photos

Here's mine:

gwf9c.jpg

gwf9e.jpg

Accessory adapted for my dividing head. The cutter carriage is a surplus Flexispeed topslide riveted to a No.2 MT, although this could easily be a boring head ( I didn't have one at the time I made it). The tool is manipulated by using the helical gear as a hand wheel.

Rod

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