I have 3 WoodChucks and they are all 5/8" 4-TPI and the Y-screw is the same.

Mike OK


On 3/19/2018 3:09 AM, Richard Ellis wrote:
Hi Tim
The Woodchuck did not have the 4TPI I think it was around 16 TPI and a normal screw thread-----nothing special. I would like a finer adjustment than the 4TPI. I will have a study of metal work lathes. I have a Smart & Brown in my metal workshop.------------very very accurate. I have had lots of different metal lathes the best of the lot was a VDF German made lathe, Had to leave it behind when I moved house---------------too big and too heavy.
I am self taught and just play about with machines !!!!???
Richard

On Sunday, March 18, 2018 at 6:42:22 PM UTC, Tim wrote:

    5/8" 4tpi just like your woodchuck had.
    On Mar 18, 2018, at 2:59 AM, Richard Ellis <rchrd....@gmail.com
    <javascript:>> wrote:

        Further to my question Re: Y leadscrew for the Revo
        Roger have you any idea what thread Andy etc. used for the
        Revo Y axis.
         I was just going to use a normal piece of theaded rod like
        that  on my Woodchuck----------- a bit primitive but it worked
        even if a little sloppy.
        Back lash is the name of the game when using LOM's------ a
        built in problem. !!!
        Richard

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