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  1. 19th March 2010, 01:39 PM #31
    Gil Jones
    Gil Jones is offline Woodturner
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    Ern,
    Are you saying (obliquely) that VM100 jaws will fit on an SN² if the holes are drilled out from 5mm to 6mm??
    Gil

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  3. 19th March 2010, 02:50 PM #32
    rsser
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    No fraid not Gil.

    The locating collar doesn't match.

    You can get adaptors however from Vermec and I've used them successfully for the odd bowl-turning job.
    Cheers, Ern
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  4. 19th March 2010, 03:37 PM #33
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    wheelinround
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    Think you miss-understood Ern With drilling the whole larger its going to allow some play more so with size of what your normally turning wear.

    Ray
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  5. 19th March 2010, 04:06 PM #34
    rsser
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    Ray, I've not found a problem; not being mech minded I assume the reason for that is that the countersinks of screw and jaw match, and all the thread has to do is pull them together.

    With std VM jaws and 5mm screws, there's no sign of thread damage from the screw shaft stopping jaw movement so same principle there I imagine.
    Cheers, Ern
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  6. 20th March 2010, 08:24 AM #35
    Gil Jones
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    Oh well, was worth an ask...
    Thanks

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  7. 20th March 2010, 11:21 PM #36
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    colhu
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    Hi guys

    Gil - I've just this week acquired some Vermec adapters to mount Vicmark pin jaws on a Bonham chuck. The locating rings and recesses on the adapter plates were a very good fit radially, but I had to drill the VM jaw screw holes out to 6.5mm to get the screws in. I also had to slightly reduce the diameter of the Vermec screw heads (on the grinder) so they would drop into the deep holes in the pin jaws.

    I haven't used the rig seriously yet, but it looks OK.

    Ern & Ray - I think it's the locating collars and recesses on the chuck jaw slides and jaw bases that make sure the jaws sit in the right place radially - the screws hold them together.

    cheers, Colin
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  8. 21st March 2010, 05:16 PM #37
    rsser
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    Good point Colin.
    Cheers, Ern
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  9. 22nd March 2010, 03:27 AM #38
    Gil Jones
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    I tried fitting a 50mm jaw from a VM100 onto my SN2, and the screw holes align exactly (or at least appear to since I decided not to drill them yet). The alignment arcs are ever so different so as not to sit perfectly flush on the slides.
    I am tempted to "adjust" the arc on one 50mm set of VM100 (50mm) jaws, drill the holes to fit 6mm screws, and install them to see if they close properly. Actually, I may make the "adjustment" on a 50mm set of Grizzly jaws so as not to change my VicMarc jaws (VM100 and Grizzly scroll chuck parts are interchangeable).

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  10. 14th April 2010, 01:34 PM #39
    rsser
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    Just to add something to the OP:

    The GPW 96mm and 110mm chucks use the same female thread as the VM90/100 so VM inserts for those chucks may work.
    Cheers, Ern
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