I have seen many a metal worker do it too when they don’t know the jaws have to go in a certain order or put them in the wrong slots.

Console yourself that with just four jaws, you have only about five chances of getting it wrong

(4x3x2) / 4 if my maths is correct (Of the 6 possible arrangements, one will be correct)

If the jaws and chuck body are not numbered, would ikt be worth lining themall up, with the “teeth” showing, so that they can be shuffled around until the Teeth are in the right order, (As you could do with a 3 jaw chuck)

Once sorted, i would then mark the chuck body and the individual jaws, to save pain at any future date.

Howard

I have two of these chucks – the ‘outer’ sections (held on by the countersunk allen head screws) must be fitted to the correct moving jaw part in the chuck body – the segments are numbered as are the moving jaws. Obviously, the moving jaws must also be in the correct slots – corresponding to the stamping on the chuck body.

The ‘outer’ sections shown are for gripping an internal cavity in the workpiece, and can be changed for pieces designed to grip the exterior of the work, which is why they are removeable – just like the inside and outside jaws of a metalturners 3-jaw or 4 jaw chuck.

Don’t forget we are talkimg about woodworking chucks here, so ‘high precision’ does not really apply. As Vic says, they just need to be fitted in sequence to ensure they end up concentric, but you obviously need to know which one is 1,2 & 3. Which slot in the body you start from is irrelevant for this application.

Mike

It helps too, actually to ensure the scroll really does pick up the first “tooth” on the jaw…

Many’s the time when changing between external and internal jaws I’ve had to take them all out and start again. I do it now by carefully feeling each jaw drop into the start of the scroll – oh, and number-for-number.

Why is everyone so upset?

Vic posts a random woodchuck pic for the entertainment of the forum.

And then the sky falls in.

Vic – Quote “I don’t know either, it was supposed to be a bit tongue in cheek until “an other” started talking about precision chucks?!”

I also took it with tongue in cheek, and my post was simply to provide a bit of extra information for those interested, only to be told I was wrong. You are very lucky to have three wood-turning chucks – I hope they bring you great pleasure, as mine does when I have time to use it – but mine is made in New Zealand, and has no name on it, so all I wanted to do was offer my experience for others to use as they see fit – instead, I am accused of providing ‘incorrect’ information, then of describing a “precision” chuck, which I have not done in any of my posts – my chuck is stamped with numbers, so I described that – I assume for a purpose.

I joined this forum to share information, but am fed up with having to read and re-read any posts I make in case I tread on anyones over-sensitive toes inadvertently, which seems impossible to avoid. Goodbye.

On 5 March 2024 at 17:56 An Other Said:

 

I joined this forum to share information, but am fed up with having to read and re-read any posts I make

in case I tread on anyones over-sensitive toes inadvertently, which seems impossible to avoid. Goodbye.

It would be a pity to lose you. Why not stay and ignore the more sensitive? I felt exactly this way when I joined (perhaps it’s just this site’s way of sounding you out. You are not obliged to justify yourself.)

dave8