Anybody using the Nova Cole Jaws or How to get a smooth bottom?

Have a question or want to show off your project? Post it! No Registration Necessary.  Now with pictures!

Threaded View
Good morning,

I'm interested in these jaws:

http://www.sears.com/nova-woodworking-nova-jscole-cole-jaws/p-SPM5857402401
P?prdNo=1&blockNo=1&blockType=G1
  
But I have a couple of questions.  I have a Jet JML-1014 lathe with a 10" s
wing.  I'm wondering if these will fit.  The largest bowl I can turn is ~ 1
0" and I hate to give up too much of that if I can avoid it.  But I also li
ke to turn very thin bowls if possible.  So, if I recess the bottom to fit  
on my Nova jaws then I end up having to have the bottom thicker then I want
.  I would like to turn down that recess flush and thought this would be a  
solution.  I'm also looking at those "donut" jigs, but from what I read I c
ould lose up to 2" off the overall diameter if I do that.   Would this also
 be the problem with the cole jaws?  Would I have to give up a lot to achie
ve this.

Essentially, I guess what I want is the largest bowl I can get, turned thin
, with a smooth bottom.

Hmmm, sounds like the perfect woman...

Anyway, any suggestions, as always, appreciated.

-Jim

Re: Anybody using the Nova Cole Jaws or How to get a smooth bottom?
jtpryan wrote:
Quoted text here. Click to load it
http://www.sears.com/nova-woodworking-nova-jscole-cole-jaws/p-SPM5857402401P?prdNo=1&blockNo=1&blockType=G1
Quoted text here. Click to load it
swing.  I'm wondering if these will fit.  The largest bowl I can turn is ~ 10"
and I hate to give up too much of that if I can avoid it.  But I also like to
turn very thin bowls if possible.  So, if I recess the bottom to fit on my Nova
jaws then I end up having to have the bottom thicker then I want.  I would like
to turn down that recess flush and thought this would be a solution.  I'm also
looking at those "donut" jigs, but from what I read I could lose up to 2" off
the overall diameter if I do that.   Would this also be the problem with the
cole jaws?  Would I have to give up a lot to achieve this.
Quoted text here. Click to load it
You've got to figure at least an inch from the inside of the outside  
button to the ways of the lathe.  If you have a 10" swing, the maximum  
bowl rim diameter will be no more than 9" and probably more like 8".

Another thing about cole jaws:  If you have your tool rest  parallel  
to the bottom of the bowl and the bowl starts slipping out of the  
jaws, it will catch between the jaws and the tool rest and become an  
instant projectile.  DAMHIKT.

I fooled around with mine for 3 or 4 years before I got me a vacuum  
pump and started vacuum chucking and have never had one leave the  
chuck since.  Other than the pump you can cobble the rest  of the  
system together.  My headstock shaft is hollow so on the bowl end it  
required a faceplate, a rubber plumbing washer, a disk of 3/4" MDF and  
facing for the disk is a sheet of foam from Hobby Lobby, glued on with  
spray glue.  My lathe swing is 15" and my largest disk is 14 7/8" and  
it will accommodate a bowl of the same diameter.

If interested check Bill Noble's site at  
http://www.wbnoble.com/index.html .

--  
G.W. Ross

Closed Hearing for the Caption Impaired...







Re: Anybody using the Nova Cole Jaws or How to get a smooth bottom?

Quoted text here. Click to load it

I can't tell if those are the mini or the standard (Nova makes both).  
The standard are too large, the mini fits

That being said, either set only clamps down at 8 points, while the  
donut has a more secure hold.  

There is another option., You take the mini-jaws and add a wood addition  
to them, that is to say you add machinable jaw set to the cole-jaws.  I  
used maple that was about 2x6.

When finished you machine a perfect fit recess into the wood jaws and  
clamp the bowl with those. If the fit is right, you have a continuous  
clamp all the way around the rim of the bowl. Although I would also  
bring the tail stock up for the majority of the turning off the tenon.

--  
--------------------------------------------------------
Personal e-mail is the n7bsn but at amsat.org
We've slightly trimmed the long signature. Click to see the full one.
Re: Anybody using the Nova Cole Jaws or How to get a smooth bottom?
Ralph E Lindberg wrote:
Quoted text here. Click to load it
I like the idea of the machinable jaws.  Also the OP talked about a  
bottom recess rather than a tenon.   I guess a blunt tailstock support  
could be used in this case, though.  I have used a 1" diameter disk  
with a hole for the point for something like this.

--  
G.W. Ross

Closed Hearing for the Caption Impaired...







Re: Anybody using the Nova Cole Jaws or How to get a smooth bottom?


Quoted text here. Click to load it

I shamelessly stole that idea from  Dale Larson (current AAW President),  
I have no idea who he stole if from

"Everything of value I do I learned from someone else" Eli Aviseria

--  
--------------------------------------------------------
Personal e-mail is the n7bsn but at amsat.org
We've slightly trimmed the long signature. Click to see the full one.
Re: Anybody using the Nova Cole Jaws or How to get a smooth bottom?

Quoted text here. Click to load it

Good idea. The problem with a point on the tailstock is that it acts as
a wedge and can easily split the piece when tightened.

Re: Anybody using the Nova Cole Jaws or How to get a smooth bottom?
Remember they can expand just like they compress.

The rubber / plastic disks (I have a set but forget it has been so
long) - press on the inner side of the lip of the bowl so the foot can
be cut and beautified.

The jaws are soft Aluminum and can be easily cut back by hand or by a  
machinist.

Martin

On 8/1/2012 9:04 AM, jtpryan wrote:
Quoted text here. Click to load it
http://www.sears.com/nova-woodworking-nova-jscole-cole-jaws/p-SPM5857402401P?prdNo=1&blockNo=1&blockType=G1
Quoted text here. Click to load it
swing.  I'm wondering if these will fit.  The largest bowl I can turn is ~ 10"
and I hate to give up too much of that if I can avoid it.  But I also like to
turn very thin bowls if possible.  So, if I recess the bottom to fit on my Nova
jaws then I end up having to have the bottom thicker then I want.  I would like
to turn down that recess flush and thought this would be a solution.  I'm also
looking at those "donut" jigs, but from what I read I could lose up to 2" off
the overall diameter if I do that.   Would this also be the problem with the
cole jaws?  Would I have to give up a lot to achieve this.
Quoted text here. Click to load it

Re: Anybody using the Nova Cole Jaws or How to get a smooth bottom?
Take a look at this.  You can make it yourself to ensure the max size  
that will fit your lathe.  And it's easier to move the rubber stoppers.

http://www.woodworkersguide.com/2010/10/17/how-to-make-a-longworth-chuck/

--  
Intelligence is an experiment that failed - G. B. Shaw

Re: Anybody using the Nova Cole Jaws or How to get a smooth bottom?
That looks nice, but with the adjustments - it would be great for
odd shaped items that need a foot.  - The independence of each holder  
does that - clamp a triangular chunk.  ....

The cole is self centering.  The one shown on Sears site seems to fit
easily a 10" lathe.  It can get larger but just don't use it that large.
Look at the details below. (the text box)
Martin

On 8/2/2012 12:16 PM, Larry Blanchard wrote:
Quoted text here. Click to load it

Re: Anybody using the Nova Cole Jaws or How to get a smooth bottom?

Quoted text here. Click to load it

That's the 8-point Longworth, which I like a-lot more then the original  
4 point

--  
--------------------------------------------------------
Personal e-mail is the n7bsn but at amsat.org
We've slightly trimmed the long signature. Click to see the full one.
Re: Anybody using the Nova Cole Jaws or How to get a smooth bottom?
wrote:

I'll Echo what a few have said here.. I spent big bucks (for me, at
the time) for the Oneway jumbo jaws.. Didn't like 'em..

Finally put together a vacuum chucking system out of used parts and
shop-made chucks and never looked back..

Not buying the Jumbo Jaws would have paid for half of my vacuum
system..


Quoted text here. Click to load it
swing.  I'm wondering if these will fit.  The largest bowl I can turn is ~ 10"
and I hate to give up too much of that if I can avoid it.  But I also like to
turn very thin bowls if possible.  So, if I recess the bottom to fit on my Nova
jaws then I end up having to have the bottom thicker then I want.  I would like
to turn down that recess flush and thought this would be a solution.  I'm also
looking at those "donut" jigs, but from what I read I could lose up to 2" off
the overall diameter if I do that.   Would this also be the problem with the
cole jaws?  Would I have to give up a lot to achieve this.
Quoted text here. Click to load it

Re: Anybody using the Nova Cole Jaws or How to get a smooth bottom?
I use the Cole jaws regularly on my Myford Mystro lathe which has an eleven  
inch swing.

I think you should be O.K on your lathe.   I have been using these jaws for  
about three years and can only remember one occasion when the bowl came off.  
That was because I got a rather heavy catch and the damage from the catch  
was worse than the small scratches from the bowl catching the toolrest.

Tom.

"Mac Davis"  wrote in message  

wrote:

I'll Echo what a few have said here.. I spent big bucks (for me, at
the time) for the Oneway jumbo jaws.. Didn't like 'em..

Finally put together a vacuum chucking system out of used parts and
shop-made chucks and never looked back..

Not buying the Jumbo Jaws would have paid for half of my vacuum
system..


Quoted text here. Click to load it


Site Timeline