On Apr 16, 6:16 pm, "G.W. Ross" <
gw...@comwest.net> wrote:
> > Other than quality and/or versatility, what makes one chuck better than
> > another?
>
> 1--Price
> 2--Availability of additional jaws, preferable from more than one source.
> 3-Type.
> A- You normally want a 4-jaw self centering. There are some
> that you adjust each jaw separately.
> B- A scroll chuck that is operated by a hex key is nice. Some
> inexpensive ones have two sections that are rotated by use of pins
> fitting in two holes. These need two hands to operate.
> 4- Availability of inserts so that you can still use the chuck when
> you migrate to a different lathe simply by changing the adapter insert.
All great points. But the one I think is the most important is #4,
above. I can't stress enough the importance and ease of getting a
chuck that you can adjust with one hand. Yes, we all used the two key
system for years; and I hated it. When mounting larger pieces, you
had to "belly up" to hold the piece with your body since you needed
both hands to secure the piece. It isn't hard when you have a stub
tenon or expansion hole cut, but that first session is difficult when
you want to mount the piece, or any time you work on a larger piece.
It is also more difficult to remount a piece on the chuck as you have
to try to balance the piece for mounting in your indexing marks while
using **both** hands to tighten the chuck evenly. Mechanically, the
two handed, two key system is a pain in the ass.
> Most of these factors come under quality or versatility, so quality
> and versatility pretty much says it all.
> I personally like the Nova chuck, I have 4 and the jaws interchange
> easily. I have 5 types of jaws plus a woodworm screw.
If I were looking in the price range of $150 or so, I would be all
over the Nova. Plenty of interchangeable inserts, jaw options, and a
great track record. When I was turning a lot, several of our club
members had them and loved them. I was worried about the drill chuck
style key, but no one ever seemed to have a problem with them.
As for me, I have two VicMarcs. One is so damn old that the jaws turn
in reverse, revealing its heritage as a metal working chuck. It has
been used for about 15 years now, and it still works smooth as butter
and holds with crushing strength without slipping. I liked it so much
I bought another one, and outfitted it with jaws for a project I was
doing. Same quality, same smooth action, and holding power. Love
those Vics.
One of the features that made me take the Vic over the others was that
the whole housing is closed up so it keeps dust/dirt infiltration to a
minimum, and the other was that it uses a hex key to adjust. The hex
key gives 100% positive contact in the key hole, and it never wears.
Talk about easy. And I can buy a hex key replacement at the auto
parts store anytime I misplace the key.
And like GWR said, there are many different inserts available as well
as jaw options for almost all of the better chucks.
For me, I thought long and hard about some of the inexpensive chucks
that were out there at the time I was buying them 13 and 15 years
ago. I wanted to save a few dollars like anyone else. Then I thought
of what I would be doing with the chuck. Spinning a 3 - 5 pound block
of wood on my jet mini at a few thousand rpm while I was leaning over
the machine cutting on that wood....
I decided to get the best I could afford at the time. Never have I
regretted that decision.
Robert