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Thread: Thread on tail stock quill
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22nd June 2014, 10:57 AM #1
Thread on tail stock quill
Evanism's "chuck on a tail stock" post had me revisiting the threaded tail stock quill idea. I realized many years ago that it was a very desirable feature to have.
I use the threaded tail stock quill quite a lot on our over 12yo Nova Mercury lathe, but mainly with the Nova MT2 collet system Nova implemented on the Mercury lathe. It is a brilliant system on mini & midi lathes as there is no lost length between centres for a Jacobs Chuck which then reduces the requirement for a bed extension. Its not quite as accurate as the ER system but still quite good.
The quill thread can only be utilized for stationary applications - i.e. securing a dedicated 1" x 10 drill chuck, MT2 collet nut, or collet chuck or at a pinch used as a reversing mandrel, however it cannot be rotated to confirm centering.
I was wondering if other turners are aware of any other model lathe with a threaded tailstock quill. If you are could you let me know please either here or by PM.
Nova Mercury tailstock + Vermec ER25 chuck.jpgNova Mercury tailstock quill acc.jpgNova Mercury tailstock quill detail.jpg
First is with Vermec ER25 Collet chuck; 2nd - all these accessories will fit the quill & 3rd the Nova MT2 collet.
(ps Nova MT2 collets or nuts are no available.)
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22nd June 2014, 08:06 PM #2
The Nova Comet I had, had a very fine thread on the tail stock, probably about 16tpi. I still have the nut and collets but I no longer have the lathe.
JimSometimes in the daily challenges that life gives us, we miss what is really important...
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3rd July 2014, 12:21 AM #3
Hi all,
Whilst i'm not sure of any lathes that have this feature, if the tailstock quill is not hardened it would be pretty easy to thread the end of it to match the headstock thread or any other thread for that matter. Just need to know someone with a metal lathe...... Just so happens there is a metalworking section on this forum! Seriously, it would not be that hard to do if you are interested.
Cheers,
Ew1915 17"x50" LeBlond heavy duty Lathe, 24" Queen city shaper, 1970's G Vernier FV.3.TO Universal Mill, 1958 Blohm HFS 6 surface grinder, 1942 Rivett 715 Lathe, 14"x40" Antrac Lathe, Startrite H225 Bandsaw, 1949 Hercus Camelback Drill press, 1947 Holbrook C10 Lathe.
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3rd July 2014, 09:18 AM #4
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3rd July 2014, 11:20 PM #5
I was thinking about this today, and had another idea.
You can buy "blank end arbors" a hardened morse taper shank with a soft end. This could easily be threaded to suit the lathe spindle tooling and put in the tails stock just like a drill chuck or live center.
Ew1915 17"x50" LeBlond heavy duty Lathe, 24" Queen city shaper, 1970's G Vernier FV.3.TO Universal Mill, 1958 Blohm HFS 6 surface grinder, 1942 Rivett 715 Lathe, 14"x40" Antrac Lathe, Startrite H225 Bandsaw, 1949 Hercus Camelback Drill press, 1947 Holbrook C10 Lathe.
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4th July 2014, 09:10 AM #6
Thanks its a good idea but sort of negates the purpose of using MT2 collets in the MT2 tailstock. The 1"x10 thread is for a MT2 collet nut or "collet clamp nut". Other option is to use drill bits with an MT2 shaft but they are a tad expensive and not readily available in smaller sizes.
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4th July 2014, 09:55 AM #7
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4th July 2014, 09:59 AM #8
An interesting concept, especially if you could get a live centre with a parallel shaft. Thinking on that, it shouldnt be too hard to have one modified to suit this idea.
Its not some thing that is too common these days, I have not come across it on anywhere lathes to date.Inspiration exists, but it has to find you working. — Pablo Picasso
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