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28th May 2021, 03:05 PM #1
Mystery lathe spindle attachments
I was given a box of attachments from a local who used to have an old woodfast lathe like mine. There are two attachments however which are a mystery to me.
Both are threaded for the bed end of the spindle. One looks like it's just a cover with a knurled surface. The other is a cup, roughly 65 mm tall, with an internal depth of 35 mm, and internal diameter of 50 mm.
Any ideas?
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28th May 2021, 04:04 PM #2China
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Small one is a spindle protector, large one is a jam chuck.
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28th May 2021, 04:37 PM #3
Thanks China.
When is the spindle protector used, and is it still a common accessory? The only time my spindle is exposed is when turning between centers... but that's hardly an operation which possess a high risk of damage to the spindle, in my limited experience.
That's interesting about the jam chuck. I only know them as self made timber items. It never occurred to me that they may be made from steal as a premade item.
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28th May 2021, 05:25 PM #4SENIOR MEMBER
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Also called a cup chuck.
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28th May 2021, 06:41 PM #5GOLD MEMBER
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Hi Lance. I used to use timber jam/friction chucks for holding bowls when hollowing out the inside before I bought a couple of vicmarc chucks. The cup chuck you scored looks like a beauty, they are more for holding longer items like goblets etc (which seem to be a thing of the past). Also good for lidded boxes.
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28th May 2021, 08:13 PM #6
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28th May 2021, 09:12 PM #7GOLD MEMBER
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28th May 2021, 10:22 PM #8
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23rd July 2021, 05:05 PM #9GOLD MEMBER
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Surprisingly good holding power with the old cup chuck I have a couple I use from time to time.
We used them at tafe turning 250mm long urns.Turning round since 1992
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