Author Topic: Longworth Chuck  (Read 6380 times)

pennardesign

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Longworth Chuck
« on: July 08, 2012, 08:11:11 PM »
Hi

Has anyone here made their own 'Longworth Chuck', if so what fittings did you use to hold the bowl - rubbers etc.

Brian

Offline John D Smith

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Re: Longworth Chuck
« Reply #1 on: July 08, 2012, 08:22:06 PM »
Hello, Brian I made one a few years ago on the MDF faceplate I used Nutserts the the rubbers were door buffers/stops if you use these get the White ones the black ones mark the wood. Regards John
John Smith

Offline dr4g0nfly

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Re: Longworth Chuck
« Reply #2 on: July 08, 2012, 08:26:48 PM »
Brian,

I also made of from MDF, I used white Door stops as work holders.

Bryan
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pennardesign

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Re: Longworth Chuck
« Reply #3 on: July 08, 2012, 08:27:05 PM »
John

Thanks for the fast reply - do you find these a little big?

Brian

Offline dr4g0nfly

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Re: Longworth Chuck
« Reply #4 on: July 08, 2012, 08:50:02 PM »
Hi Brian,

I have a set of button jaws for my chuck, so the longworth is for pieces that exceed the size capability of them. I wanted something quite substantial to retain whatever I mounted on it.

Don't forget for the same speed of rotation a greater radius will give you a greater radial velocity.
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Offline John D Smith

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Re: Longworth Chuck
« Reply #5 on: July 08, 2012, 09:24:38 PM »
Brian you can get smaller ones if you shop around.Regards John
John Smith

thebowlerhattedturner

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Re: Longworth Chuck
« Reply #6 on: July 08, 2012, 11:11:59 PM »
Hello Brian,
               although I have not made a Longworth chuck I have made some buttons for my cole jaws. I used polypropelene chopping boards which turn nicely on the lathe and so far have had the strength to hold anything I have wanted it to.
Regards
John BHT

Offline Turners cabin

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Re: Longworth Chuck
« Reply #7 on: July 09, 2012, 01:08:08 PM »
i made some buffers from a m6 bolt with a piece of steel rod drilled to fit over bole then i got some pvc tube to cover it i use them on my cole jaws
i will photograph later for you

Offline hughie

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Re: Longworth Chuck
« Reply #8 on: July 14, 2012, 09:02:18 AM »
http://www.woodworkforums.com/f8/longworth-chuck-polycarbonate-54412/ heres a link to one I made several years ago out of Polycarbonate its approx 600mm dia, backing plate is 10mm and the front is 8mm.

pennardesign

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Re: Longworth Chuck
« Reply #9 on: July 14, 2012, 05:45:29 PM »
Well I have finally made my 'Longworth Chuck' Its 300mm in dia and has 8 rubber buttons (15mm test tube stoppers), I have not used it yet but was quite straight forward to make.

Here's a picture of the beauty!

Offline John D Smith

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Re: Longworth Chuck
« Reply #10 on: July 14, 2012, 06:04:54 PM »
Hello Brian, A very nice chuck indeed I am sure you are pleased with this well done.Regards John
John Smith

pennardesign

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Re: Longworth Chuck
« Reply #11 on: July 14, 2012, 07:12:51 PM »
John

Very please and so simple to make, I was going to buy one from the USA as I failed to find a supplier in the UK - I am now going to make a much larger one using nylon sheet for larger bowls. I will keep you posted.

thebowlerhattedturner

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Re: Longworth Chuck
« Reply #12 on: July 17, 2012, 07:19:01 PM »
very nice indeed.