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Thread: Question on this tutorial
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13th January 2008, 06:34 PM #1
Question on this tutorial
HI Guys, I was wondering if you can tell me is the wood being held in a jacob chuck. Is that right?
http://www.angelfire.com/d20/mikesbobbins//birth.html
bye Toni
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13th January 2008, 06:44 PM #2
Hi Toni,
I dont think it's a Jacobs chuck. The 3 jaws on the Jacobs cannot handle square stock. I suspect that they are pin jaws in a scroll chuck (like the Nova). I am sure I will be corrected if I am wrong.Chris
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13th January 2008, 06:47 PM #3
Yes Toni, that is a Jacobs chuck aka a standard drill chuck with a morse taper to fit in your headstock
Cheers
DJ
ADMIN
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13th January 2008, 06:48 PM #4
Looks like one, definately not nova pin jaws.
maybe he's rounded the chuck end 1st?....................................................................
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13th January 2008, 06:51 PM #5
Looks like an Engineer's Chuck to me...
Attachment 64636
Toni, I usually use a Jacob's Chuck for my bobbins, but I round off one end first so it can grip properly.
- Andy Mc
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13th January 2008, 07:03 PM #6
like skew said round the end to fit in the 3 jaws of the drill chuck.
3 into 4 dont go very well.Jim Carroll
One Good Turn Deserves Another. CWS, Vicmarc, Robert Sorby, Woodcut, Tormek, Woodfast
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13th January 2008, 07:08 PM #7
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13th January 2008, 07:14 PM #8
Another trick is to cut an MDF disk into four segments, then nick the "points" off before screwing 'em onto a faceplate to make a jam chuck. This gives you a square hole to simply jam the end of the blank into.
I did this way back when, before I bought my first scroll chuck.
Tapering the cut ends will allow the same jam chuck to be used for a variety of blank sizes.
- Andy Mc
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13th January 2008, 07:38 PM #9
WOW thanks for all the replies. And the advice regards rounding it up.
thanks
Toni
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16th January 2008, 05:19 AM #10
Hi chances are you are right and it is a jacobs chuck, i use one myself for doing Lace bobbins and they will take square stock, also about the chuck being on a morse taper, this can be danger and can fly out, it has happen to me and a few turners i know, tailstock end okay, not the head.
Best is to have the morse left off and just use the jacobs in your main chuck like a nova, save a lot of time as well changeing chucks about.Chuck a chuck.... LB
http://www.shapewood.co.uk
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