6 jaw chuck.

[john lucas]

I have just finished repairing this 6 jaw chuck for one of our club members. It was totally frozen. I had to drive the threaded part off. Had to put it on the lathe and use a boring cutter to clean up the inside. I was able to clean up the male portion with sandpaper after mounting it on the lathe. Had to turn off a hair of the spiral gear to get rid of damage and poor surface. Then used a diamond bit in my dremel to round over the teeth on that gear.
. None if the jaws would slide so i Had to hand file all the slide rails on the chuck body and then sand the sides of each jaw until I got tgem all to slide. Got it all together and working. It's missing the big external snap ring. I used wire to fill that gap temporarily until I can get snap ring.
Does anyone know who made this thing. It's a tommy bar chuck.

 

[Odie]

Looks like a great job of it, John.....

I'm unable to think of any advantage in having six jaws......

Is there any reason for wanting a six jaw chuck?

=o=

 

[john lucas]

Not sure. If you have it open larger than a complete circle you would have 12 gripping points instead of 8.

 

[hughie]

Looks like a great job of it, John.....

I'm unable to think of any advantage in having six jaws......

Is there any reason for wanting a six jaw chuck?

=o=

Me neither Odie

 

[Bill Alston]

Not applicable to wood turning perhaps, but some may find this interesting.

It’s perhaps an interesting point that I watched a video from the 1980’s, where a woodturner was using a standard 3 Jaw Chuck. Special Jaws suitable to the task had been made for it. Some say that the reason we use 4 Jaw Chucks is because it’s easier to manufacture the Top, or Accessory Jaws. This may have been true in the early days but seeing Axminster cut their Accessory on a CNC Mill rather than say a Bandsaw negates that premise now.

This begs the question, how would a 3 Jaw Wood Turning Chuck perform? Changing Chuck Jaws would be quicker for sure!

 

[Bill Alston]

Hhm, at €98 this is surprisingly affordable. I wonder if I can justify one for my Metal Turning Lathe?

 

[Bill Blasic]

I would check with Vicmarc as they are the only one I know of that has a scroll ring like that.

 

[Holmes Anderson]

Beyond the perfect circle position, each jaw is like a line segment approximating the curve of the larger diameter circle. More line segments better approximate a curve, so more jaws should provide a more perfect circle-like grip over a wider range of circle diameters, so it might not create marks at a diameter at which four jaws would.

 

[Sam Force]

Odie posted a picture of a 6 jaw chuck a few years ago on this forum. I have seen them in catalogs before but don't recall whose it was

 

[Michael Anderson]

Odie posted a picture of a 6 jaw chuck a few years ago on this forum. I have seen them in catalogs before but don't recall whose it was

Thread '6-jaw chuck?'

Nov 4, 2018

I was not aware there was such a thing as a six jaw wood lathe chuck until I ran across it searching for something else. My question: Why would a turner want one?......what advantage is there over a standard four jaw chuck?

The information suggests it's a more secure mount, but is it really? Unless the jaws are fully closed, the grip would be at 12 points, instead of 8 with a four jaw chuck.

-----odie-----

• Odie
• Replies: 20
• Forum: Woodturning Discussion Forum

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