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(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
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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
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(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.
![[Image: OtGs6u.jpg]](http://imagizer.imageshack.us/v2/800x600q90/924/OtGs6u.jpg)
(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.
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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.
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(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
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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. ;)
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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.
Willie
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The following 1 user Likes DaveH's post:
EdK (06-20-2016)
a child of the 60's and 50's and a bit of the 40's
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A six jaw puts half the force of a three jaw on the work, so less distortion and less marring.
Tom
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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!
Willie
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