MetalworkingFun Forum

(06-18-2016, 08:39 AM)Jim1611 Wrote: [ -> ]

(06-17-2016, 09:09 PM)TomG Wrote: [ -> ]Nice job. It's always fun to pull out the steady.

Tom

Thanks Tom. I rarely use it but when it's needed nothing takes it's place.

(06-18-2016, 07:23 AM)pepi Wrote: [ -> ]I do not believe I have seen a 6 jaw chuck before, cool love learning. That is a nice looking steady, even better it was built by the owner.

Thanks pepi. I tend to build most everything extra like this, I enjoy it. The 6 jaw is a Cushman. It's also a scroll chuck too so the center can be adjusted. It's been great to have.

Hi JIM
Was also admiring Your 6 Jaw Chuck
Just curious what mounting to spindle ???
Is it Camlock or your USA styled ???
aRM

Six jaw chucks are wonderful. They chuck work nearly as concentric as collets, except they are infinitely adjustable. I have a Buck six jaw on my lathe and about the only time I'll resort to collets is if I'm doing a large number of parts.

Tom

(06-18-2016, 11:16 AM)aRM Wrote: [ -> ]Hi JIM
Was also admiring Your 6 Jaw Chuck
Just curious what mounting to spindle ???
Is it Camlock or your USA styled  ???
aRM

It's a camlock. Here's a shot of the one I made for my 4 jaw chuck.

(06-18-2016, 11:41 AM)TomG Wrote: [ -> ]Six jaw chucks are wonderful. They chuck work nearly as concentric as collets, except they are infinitely adjustable. I have a Buck six jaw on my lathe and about the only time I'll resort to collets is if I'm doing a large number of parts.

Tom

They are great to use. Mine won't hold anything smaller than 3/8" dia. so I have to use collets for that size and under.

My Logan came with a Buck 6 jaw which by itself is worth close to 50% of the value of the lathe. Hadn't had the opportunity to use one in years and its great.

(06-18-2016, 10:50 PM)Dr Stan Wrote: [ -> ]My Logan came with a Buck 6 jaw which by itself is worth close to 50% of the value of the lathe.  Hadn't had the opportunity to use one in years and its great.

Wonder if we would be able to get one in a D1-6 CAMLOCK ???
Then again converting over some 15 times would be a reeeeeeeal killer for us !!!
aRM

I've used 6-jaw chucks before but never really felt to be lacking because I don't own one. My D1-6 mount 10" Pratt-Burnerd Super Precision 3-jaw chuck runs with less than 0.0005" runout with anything it can hold, regardless of size or orientation of the top jaws. When I did use the very nice 6-jaw chucks I found that not all the jaws exert the same pressure. I know this may have been just the one I was using. The way I found this was using 6 little squares of 0.003" brass shim stock to protect the finished surface I was clamping and two of them (not opposite each other) had fallen out while I was working the part.

When you only have three, all have to be clamping at equal pressure. ;)

From what I can gather 6 jaw chucks come into their own for holding thin wall tubing. But what I have not ever seen is an explanation of WHY that is.

(06-20-2016, 01:59 PM)Highpower Wrote: [ -> ]From what I can gather 6 jaw chucks come into their own for holding thin wall tubing. But what I have not ever seen is an explanation of WHY that is.  

With a three jaw the tube becomes triangular, six jaw it becomes hexagonal ............... looks much better

DaveH

A six jaw puts half the force of a three jaw on the work, so less distortion and less marring.

Tom

Do they use a different pitch on the scrolls or something? I'm thinking you'd get more juice from an orange if there were 4 hands squeezing it than 2 hands.

Dave: Sounds like you need an 8-jaw chuck!