Holding a ring on a lathe.

I need to hold a short ring shaped object on the lathe. It is around 4mm long and both sides need to be faced and chamfered internally and externally.

Whats the best was to hold this, my three jaw doesn't really hold it well enough.

Make yourself a set of soft jaws, drill pilot hole, bore to suit ring diameter, voila!

George

Soft jaws. See MEW issue 52.

Neil

I would like to see the article in issue 52, can anybody send me a PDF copy please.

Martin P

You could try making a Pot Chuck **LINK** I recently made one for a 3/4 OD x 1/8 cylinder end cover which needed a boss on one face and recess on the other.

Is that 4mm before or after refacing? What diameter?

A thought from a newbie: How about boring a centre hole out of a length of scrap ally, popping 2-3 1.5mm setcrews around the diameter to hold the work in there while you face and internally chamfer then drill a threaded hole inside the bar, to fix a truncated cone to clamp onto the internal chamfers and chamfer the outsides? Set screws will be reduncdant now and you can chamfer the fixture away.

Hello all, if you have a lathe that takes 5c collets, you could use one these, a Master Expanding collet. One came with my lathe, but have never used it !.

Some of these methods look pretty good to me but as a newbie I've also read all sorts of stuff about balancing the compression on the chuck jaws along their length to prevent bell-mouthing.

Is my information out of date or am I just fussing unnecessarily?

Jon

> I would like to see the article in issue 52, can anybody send me a PDF copy please.

You cheeky monkey Martin!

Buy a copy at WH Smith and help me pay my mortgage!

Neil

Neil is there anywhere to buy the articles you want with a list?

not good with comps so prob just missed it.

seen few posts listing specific issue and thought that might be worth read.

cheers

.

Does WHS stock old back-issues ?

I thought you would want to deal direct.

MichaelG.

Edited By Michael Gilligan on 02/02/2015 15:19:56

where would I get a copy of MEW 52 when we are in the 200's now, I'm housebound with a broken foot in a village and six miles from the nearest W H Smith.

Martin P

MEW issue 52,  are you sure about that?

Way back in 1998 I think.

Edited By V8Eng on 02/02/2015 15:21:49

Its actually PAGE 52 of No 224 which is in the shops or just gone.

MHS may well have back issues.

.

Good job he didn't buy a copy of Issue 56 then.

MichaelG.

Chris

You may find the pages on my website about using soft jaw helpful. However, it would be nice to know how big (internal and external diameters) the ring is to see if it is a practical method.

The pages are athttp://www.homews.co.uk/page100.html

For anyone who may like the challenge of making a set, or two, see here **LINK**

Harold

Edited By Harold Hall 1 on 02/02/2015 16:54:53

Hi Michael, especially if he wanted to read something in issue 52.

Regards Nick.

Just been having rummage in scrap box and found some ail hex bar .

So I see project for me and my little girl as she wants to make something .

Should say Ali

The OP says "both sides need to be faced and chamfered internally and externally." That presumably requires both internal and external work holding.

I imagined soft jaws to do the facing, boring and internal chamfering, followed by an expanding arbor to complete the external chamfering (and turn the outside surface, presumably).