Re: Rounding the bottom


"mac davis" <mac.davis@xxxxxxxxxxxxxxxxxxxxx> wrote in message
news:7h1ff19bg5fipd0chje9dvupbaubdelm6r@xxxxxxxxxx
> On Sun, 07 Aug 2005 17:04:25 GMT, "Jim Staley" <JimStaley@xxxxxxxxx>
wrote:
>
> >I have made a number of segmented bowls using a Ringmaster. This tool
cuts
> >tapered rings from a flat piece of wood so that one fits exactly on
another.
> >They are glued together and to the remaining disc and then sanded. The
1/2"
> >hole used to hold the board on the Ringmaster is filled with a plug. The
> >angle of taper depends on the wall thickness and board thickness, but is
> >usually about 27 degrees.
> >
> >I just bought a lathe, and I would like to round the bottom of some of my
> >bowls. I'd like advice on how to hold them on the lathe and how to shape
> >the bottom. I am considering the following for bowls that I have
completed:
> >
> >1. Mount on lathe using Cole jaws to hold top.
> >2. Turn a shoulder on the bottom.
> >3. Reverse on lathe and hold with 4-jaw chuck.
> >4. Shape bottom.
> >
> >For future bowls, I am considering the following so that I have more room
> >for turning:
> >
> >1. Glue bottom to next ring.
> >2. Mount this assembly on lathe using Morse taper 1/2" threaded thingy.
> >3. Turn a shoulder on the bottom using parting tool.
> >4. Remove thingy and replace with 4-jaw chuck.
> >5. Mount assembly, and shape bottom.
> >
> >I'd appreciate any comments and advice. I am particularly concerned with
> >blending the ring with the bottom. With my extremely limited lathe
> >experience, I can't figure out how to make the cut. I am considering a
> >round nose scraper.
> >
> depends on which, if any, chuck you're using..
> I tried just about everything I could to avoid paying $80+ for the Jumbo
Jaws
> for my Oneway Talon... ring clamps, turners tape on faceplate or wood
blank,
> sock on chuck, etc....
> After biting the bullet and getting the jaws, I realized in about 30
seconds
> that, for me, I should have just got the jaws when I got the chuck...YMMV
>
>
> mac

Use a vacuum chuck. Find someone with the current issue of "Woodturning
Design" (if you are not a subscriber). There is a fine article in there
about building your own chucks, system, etc. for around $200. Once you use
it, you will never go to anything else.

Regards, James Johnson



.

Relevant Pages

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